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        <adviserName>FMR INVESTMENT MANAGEMENT (U.K.) LIMITED</adviserName>
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      <subAdviser>
        <adviserName>FIDELITY MANAGEMENT &amp; RESEARCH (HONG KONG) LIMITED</adviserName>
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      <subAdviser>
        <adviserName>FIDELITY MANAGEMENT &amp; RESEARCH (JAPAN) LIMITED</adviserName>
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        <name>DELOITTE &amp; TOUCHE LLP</name>
        <city>Boston</city>
        <stateCountry>MA</stateCountry>
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      <nameOfIssuer>Boston Wtr. &amp; Swr. Commission Rev.</nameOfIssuer>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Multi-family Hsg. Rev.</nameOfIssuer>
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      <titleOfIssuer>FNMA Massachusetts Dev. Fin. Agcy. Multi-family Hsg. Rev., 0.82% (Avalon Acton Apts. Proj.) Series 2006, LOC Fannie Mae VRDN</titleOfIssuer>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dept. of Trans. Metropolitan Hwy. Sys. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dept. of Trans. Metropolitan Hwy. Sys. Rev., 0.80% Series 2010 A1, LOC TD Banknorth, NA VRDN</titleOfIssuer>
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      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-01-01</finalLegalInvestmentMaturityDate>
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        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
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          <nameOfNRSRO>N/A</nameOfNRSRO>
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        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
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      <titleOfIssuer>Massachusetts Dept. of Trans. Metropolitan Hwy. Sys. Rev., 0.80% Series 2010 A2, LOC TD Banknorth, NA VRDN</titleOfIssuer>
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        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
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      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
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        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
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      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
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        <nameOfNRSRO>N/A</nameOfNRSRO>
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      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2042-10-01</finalLegalInvestmentMaturityDate>
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          <rating>N/A</rating>
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          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
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      <yieldOfTheSecurityAsOfReportingDate>0.0060</yieldOfTheSecurityAsOfReportingDate>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.70% (Babson College Proj.) Series 2008 A, LOC Bank of America NA VRDN</titleOfIssuer>
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        <nameOfNRSRO>N/A</nameOfNRSRO>
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      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2032-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
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        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
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          <rating>N/A</rating>
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          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
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      <yieldOfTheSecurityAsOfReportingDate>0.0070</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>7405000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>7405000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0070</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.79% (Wilber School Apts. Proj.) Series 2008 A, LOC Bank of America NA VRDN</titleOfIssuer>
      <CUSIPMember>57583RD77</CUSIPMember>
      <ISINId>US57583RD773</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2027-03-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>BANK OF AMERICA NA</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>7285000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>7285000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0069</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.80% Series 2006, LOC PNC Bank NA VRDN</titleOfIssuer>
      <CUSIPMember>57583RFL4</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2036-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>PNC BANK NA PITTSBURGH PA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>PNC BANK NA PITTSBURGH PA</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>20340000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>20340000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0193</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.81% (Worcester Polytechnic Institute Proj.) Series 2008 A, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>57583RTX3</CUSIPMember>
      <ISINId>US57583RTX34</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>730000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>730000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0007</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.86% Series 2019, LOC Manufacturers &amp; Traders Trust Co. VRDN</titleOfIssuer>
      <CUSIPMember>57584YSL4</CUSIPMember>
      <ISINId>US57584YSL47</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2049-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MANUFACTURERS &amp; TRADERS TR CO</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>MANUFACTURERS &amp; TRADERS TR CO</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>12955000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>12955000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0123</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.54% (Amherst College Proj.) Series 2005 J2 VRDN</titleOfIssuer>
      <CUSIPMember>57586CHB4</CUSIPMember>
      <ISINId>US57586CHB46</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>AMHERST COLLEGE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>1</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0054</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6500000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6500000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0062</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.70% (Harvard Univ. Proj.) Series Y VRDN</titleOfIssuer>
      <CUSIPMember>57585KKV9</CUSIPMember>
      <ISINId>US57585KKV97</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>PRESIDENT AND FELLOWS OF HARVARD COLLEGE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0070</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>34505000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>34505000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0327</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.70% (Massachusetts Institute of Technology Proj.) Series 2001 J2 VRDN</titleOfIssuer>
      <CUSIPMember>57585KSV1</CUSIPMember>
      <ISINId>US57585KSV16</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2031-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MASSACHUSETTS INST TECH, MA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0070</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>30085000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>30085000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0285</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.70% (Massachusetts Institute of Technology Proj.) Series 2001 J1 VRDN</titleOfIssuer>
      <CUSIPMember>57585KSW9</CUSIPMember>
      <ISINId>US57585KSW98</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2031-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MASSACHUSETTS INST TECH, MA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0070</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>18795000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>18795000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0178</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.78% (Partners HealthCare Sys., Inc. Proj.) Series 2005 F, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>57586CGB5</CUSIPMember>
      <ISINId>US57586CGB54</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2040-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0078</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>14140000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>14140000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0134</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.78% (Baystate Health Sys. Proj.) Series 2009 J1, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>57586EKC4</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2044-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0078</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>10000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>10000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0095</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.79% Series 2009 O-1, LOC Fed. Home Ln. Bank of Boston VRDN</titleOfIssuer>
      <CUSIPMember>57586ELD1</CUSIPMember>
      <ISINId>US57586ELD12</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2031-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>FEDERAL HOME LN BK OF BOSTON</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>FEDERAL HOME LN BK OF BOSTON</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8665000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8665000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0082</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Hsg. Fin. Agcy. Hsg. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Hsg. Fin. Agcy. Hsg. Rev., 0.79% (Princeton Westford Proj.) Series 2015 A, LOC Bank of America NA VRDN</titleOfIssuer>
      <CUSIPMember>57587AJA7</CUSIPMember>
      <ISINId>US57587AJA79</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2034-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>BANK OF AMERICA NA</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>21665000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>21665000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0206</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Hsg. Fin. Agcy. Hsg. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Hsg. Fin. Agcy. Hsg. Rev., 0.79% Series 208, (Liquidity Facility Royal Bank of Canada) VRDN</titleOfIssuer>
      <CUSIPMember>57587AL55</CUSIPMember>
      <ISINId>US57587AL559</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2049-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>MA SF HOUSING REVENUE 9/12/85</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0023</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Hsg. Fin. Agcy. Multi-Family Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Hsg. Fin. Agcy. Multi-Family Rev., 0.80% Series 2013 F, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>57586NUP4</CUSIPMember>
      <ISINId>US57586NUP40</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2038-12-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>22645000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>22645000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0215</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Indl. Fin. Agcy. Indl. Dev. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Indl. Fin. Agcy. Indl. Dev. Rev., 0.12% Series 1994, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>575855N23</CUSIPMember>
      <ISINId>US575855N234</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2024-12-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>1</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0044</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>500000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>500000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0005</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 0.72% Series 2008 C2, (Liquidity Facility Barclays Bank PLC) VRDN</titleOfIssuer>
      <CUSIPMember>576051CE4</CUSIPMember>
      <ISINId>US576051CE41</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0072</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8070000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8070000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0077</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 0.81% Series 1999 B, LOC TD Banknorth, NA VRDN</titleOfIssuer>
      <CUSIPMember>576049RU6</CUSIPMember>
      <ISINId>US576049RU64</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2028-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TD BANK NA WILMINGTON DE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TD BANK NA WILMINGTON DE</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>13600000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>13600000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0129</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Decatur Indl. Dev. Board Exempt Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Decatur Indl. Dev. Board Exempt Facilities Rev., 1.03% (Nucor Steel Decatur LLC Proj.) Series 2003 A VRDN</titleOfIssuer>
      <CUSIPMember>242846AA1</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2036-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>NUCOR CORP</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0103</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>9643000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>9643000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0091</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Stanton County Indl. Dev. Rev.</nameOfIssuer>
      <titleOfIssuer>Stanton County Indl. Dev. Rev., 1.03% Series 1998 VRDN</titleOfIssuer>
      <CUSIPMember>854743AE1</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2028-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>NUCOR CORP</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0103</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Stanton County Indl. Dev. Rev.</nameOfIssuer>
      <titleOfIssuer>Stanton County Indl. Dev. Rev., 1.03% (Nucor Corp. Proj.) Series 1996 VRDN</titleOfIssuer>
      <CUSIPMember>854743AD3</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>NUCOR CORP</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0103</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0035</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Burlington Envir. Impt. Rev.</nameOfIssuer>
      <titleOfIssuer>Burlington Envir. Impt. Rev., 1.02% (Kansas City Pwr. and Lt. Co. Proj.) Series 2007 B VRDN</titleOfIssuer>
      <CUSIPMember>121822AZ3</CUSIPMember>
      <ISINId>US121822AZ33</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>EVERGY KANSAS METRO</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0102</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0009</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Burlington Envir. Impt. Rev.</nameOfIssuer>
      <titleOfIssuer>Burlington Envir. Impt. Rev., 1.02% (Kansas City Pwr. and Lt. Co. Proj.) Series 2007 A VRDN</titleOfIssuer>
      <CUSIPMember>121822AY6</CUSIPMember>
      <ISINId>US121822AY67</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>EVERGY KANSAS METRO</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0102</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2200000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2200000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0021</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Memphis-Shelby County Indl. Dev. Board Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Memphis-Shelby County Indl. Dev. Board Facilities Rev., 1.03% Series 2007 VRDN</titleOfIssuer>
      <CUSIPMember>58612AAB1</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>NUCOR CORP</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0103</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2330000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2330000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0022</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>West Virginia Econ. Dev. Auth. Solid Waste Disp. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>West Virginia Econ. Dev. Auth. Solid Waste Disp. Facilities Rev., 0.87% (Appalachian Pwr. Co.- Mountaineer Proj.) Series 2008 A VRDN</titleOfIssuer>
      <CUSIPMember>95648VAW9</CUSIPMember>
      <ISINId>US95648VAW90</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2036-02-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>APPALACHIAN POWER CO</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0087</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0016</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Blytheville Indl. Dev. Rev.</nameOfIssuer>
      <titleOfIssuer>Blytheville Indl. Dev. Rev., 1.03% (Nucor Corp. Proj.) Series 1998 VRDN</titleOfIssuer>
      <CUSIPMember>096490BV8</CUSIPMember>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2028-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>NUCOR CORP</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0103</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0004</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Beaver County Indl. Dev. Auth.</nameOfIssuer>
      <titleOfIssuer>Beaver County Indl. Dev. Auth., 0.87% Series 2018 A, LOC Truist Bank VRDN</titleOfIssuer>
      <CUSIPMember>07488JAA2</CUSIPMember>
      <ISINId>US07488JAA25</ISINId>
      <investmentCategory>Variable Rate Demand Note</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2038-05-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TRUIST BANK</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>TRUIST BANK</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0087</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>200000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>200000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0002</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Billerica Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Billerica Gen. Oblig., 0.70% Participating VRDN Series Solar 17 0027, (Liquidity Facility U.S. Bank NA, Cincinnati)</titleOfIssuer>
      <CUSIPMember>27884FZ52</CUSIPMember>
      <ISINId>US27884FZ523</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2042-02-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>US BANK NA CINCINNATI OHIO</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>1</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0070</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0022</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Boston Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Boston Gen. Oblig., 0.80% Participating VRDN Series Floaters XF 26 08, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>88034MA30</CUSIPMember>
      <ISINId>US88034MA306</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2038-05-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0023</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Commonwealth Trans. Fund Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Commonwealth Trans. Fund Rev., 0.79% Participating VRDN Series Floaters XF 26 06, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>88034MZX7</CUSIPMember>
      <ISINId>US88034MZX72</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0023</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Commonwealth Trans. Fund Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Commonwealth Trans. Fund Rev., 0.80% Participating VRDN Series Floaters ZF 25 68, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>88034MMN3</CUSIPMember>
      <ISINId>US88034MMN38</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2045-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4865000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4865000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0046</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Commonwealth Trans. Fund Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Commonwealth Trans. Fund Rev., 0.80% Participating VRDN Series Floaters ZF 25 67, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>88034MML7</CUSIPMember>
      <ISINId>US88034MML71</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2045-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0031</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Commonwealth Trans. Fund Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Commonwealth Trans. Fund Rev., 0.82% Participating VRDN Series XF 09 23, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88034WAC8</CUSIPMember>
      <ISINId>US88034WAC82</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2048-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2065000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2065000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0020</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Commonwealth Trans. Fund Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Commonwealth Trans. Fund Rev., 0.82% Participating VRDN Series Floaters XF 06 10, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88034MBM7</CUSIPMember>
      <ISINId>US88034MBM73</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5100000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5100000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0048</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.79% Participating VRDN Series Floaters XF 27 05, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88034NHJ6</CUSIPMember>
      <ISINId>US88034NHJ63</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4740000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4740000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0045</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.81% Participating VRDN Series MS 3373, (Liquidity Facility Toronto-Dominion Bank)</titleOfIssuer>
      <CUSIPMember>57583UK49</CUSIPMember>
      <ISINId>US57583UK491</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TORONTO DOMINION BANK - NY</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>7100000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>7100000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0067</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series 2016 XM0137, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88033MRY5</CUSIPMember>
      <ISINId>US88033MRY56</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5665000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5665000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0054</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series Floaters YX 10 74, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88033YS28</CUSIPMember>
      <ISINId>US88033YS289</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1200000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1200000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0011</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series Floaters ZM 05 72, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88033YW49</CUSIPMember>
      <ISINId>US88033YW497</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2032-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0038</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series Floaters ZF 27 22, (Liquidity Facility Morgan Stanley Bank, West Valley City Utah)</titleOfIssuer>
      <CUSIPMember>88034NLR3</CUSIPMember>
      <ISINId>US88034NLR34</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MORGAN STANLEY BK NA SALT LAKE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8600000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8600000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0082</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series 15 XF0245, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88033MAG2</CUSIPMember>
      <ISINId>US88033MAG24</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2045-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>9135000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>9135000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0087</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.82% Participating VRDN Series Floaters E 130, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RYC4</CUSIPMember>
      <ISINId>US74934RYC41</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2025-01-29</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>16800000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>16800000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0159</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.83% Participating VRDN Series XF 28 91, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88034WG73</CUSIPMember>
      <ISINId>US88034WG732</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2045-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2795000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2795000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0027</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.83% Participating VRDN Series 2016 XF2207, (Liquidity Facility Toronto-Dominion Bank)</titleOfIssuer>
      <CUSIPMember>88033MSD0</CUSIPMember>
      <ISINId>US88033MSD01</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2041-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TORONTO DOMINION BANK - NY</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1600000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1600000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0015</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 0.83% Participating VRDN Series 2018 XF 26 55, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88034M4V5</CUSIPMember>
      <ISINId>US88034M4V58</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0023</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Edl. Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Edl. Fing. Auth. Rev., 0.84% Participating VRDN Series Floaters XF 25 11, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88033YB59</CUSIPMember>
      <ISINId>US88033YB590</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0084</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1685000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1685000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0016</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Edl. Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Edl. Fing. Auth. Rev., 0.84% Participating VRDN Series Floaters XG 01 39, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88033YCM1</CUSIPMember>
      <ISINId>US88033YCM12</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0084</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>13055000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>13055000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0124</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Edl. Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Edl. Fing. Auth. Rev., 0.86% Participating VRDN Series XM 07 57, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>88034RM69</CUSIPMember>
      <ISINId>US88034RM698</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0076</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.79% Participating VRDN Series Floaters XF 27 06, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>88034NHL1</CUSIPMember>
      <ISINId>US88034NHL10</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2038-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>15800000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>15800000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0150</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.80% Participating VRDN Series Floaters XF 25 74, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>88034MNV4</CUSIPMember>
      <ISINId>US88034MNV45</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2048-05-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0080</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0035</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.81% Participating VRDN Series XG 02 79, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88034UR67</CUSIPMember>
      <ISINId>US88034UR675</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-03-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5445000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5445000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0052</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series Floaters ZF 26 95, (Liquidity Facility Morgan Stanley Bank, West Valley City Utah)</titleOfIssuer>
      <CUSIPMember>88034NGH1</CUSIPMember>
      <ISINId>US88034NGH17</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2043-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MORGAN STANLEY BK NA SALT LAKE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5900000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5900000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0056</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series 16 XM0221, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88033SFT6</CUSIPMember>
      <ISINId>US88033SFT69</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2030-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1900000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1900000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0018</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series Floaters G9, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RBA3</CUSIPMember>
      <ISINId>US74934RBA32</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2031-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0054</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series 2021 XF 12 37, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>88034YJR2</CUSIPMember>
      <ISINId>US88034YJR27</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2050-12-31</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>11000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>11000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0104</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series Floaters G4, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74926Y8J3</CUSIPMember>
      <ISINId>US74926Y8J33</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2033-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>19500000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>19500000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0185</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.82% Participating VRDN Series Floaters ZM 05 79, (Liquidity Facility Morgan Stanley Bank, West Valley City Utah)</titleOfIssuer>
      <CUSIPMember>88033Y4E8</CUSIPMember>
      <ISINId>US88033Y4E80</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MORGAN STANLEY BK NA SALT LAKE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2235000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2235000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0021</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 0.83% Participating VRDN Series Floaters XF 05 30, (Liquidity Facility Toronto-Dominion Bank)</titleOfIssuer>
      <CUSIPMember>88033UUL1</CUSIPMember>
      <ISINId>US88033UUL15</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-12-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TORONTO DOMINION BANK - NY</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4865000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4865000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0046</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.81% Participating VRDN Series Floaters XM 02 32, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88033SGY4</CUSIPMember>
      <ISINId>US88033SGY46</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2032-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2895000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2895000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0027</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 0.81% Participating VRDN Series EGL 15 0004, (Liquidity Facility Citibank NA)</titleOfIssuer>
      <CUSIPMember>576000SW4</CUSIPMember>
      <ISINId>US576000SW43</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>CITIBANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>45460000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>45460000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0431</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 0.82% Participating VRDN Series Floaters ZF 06 92, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88034NEL4</CUSIPMember>
      <ISINId>US88034NEL47</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2046-11-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1990000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1990000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0019</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 0.83% Participating VRDN Series 15 XF2203, (Liquidity Facility Toronto-Dominion Bank)</titleOfIssuer>
      <CUSIPMember>88033MQC4</CUSIPMember>
      <ISINId>US88033MQC46</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TORONTO DOMINION BANK - NY</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>9260000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>9260000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0088</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Spl. Oblig. Dedicated Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Spl. Oblig. Dedicated Tax Rev., 0.97% Bonds Series Floaters G 29, tender 01/03/2023, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RFZ4</CUSIPMember>
      <ISINId>US74934RFZ47</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-01-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-01-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2034-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>217</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0097</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5220000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5220000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0050</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>Y</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>RBC Muni. Products, Inc. Trust</nameOfIssuer>
      <titleOfIssuer>RBC Muni. Products, Inc. Trust, 0.82% Participating VRDN Series E 148, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RQ58</CUSIPMember>
      <ISINId>US74934RQ589</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2036-04-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>10000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>10000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0095</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Saugus Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Saugus Gen. Oblig., 0.83% Participating VRDN Series Floaters XF 06 81, (Liquidity Facility Toronto-Dominion Bank)</titleOfIssuer>
      <CUSIPMember>88034M7G5</CUSIPMember>
      <ISINId>US88034M7G54</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2042-03-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>TORONTO DOMINION BANK - NY</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4615000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4615000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0044</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev., 0.81% Participating VRDN Series XL 0042, (Liquidity Facility Morgan Stanley Bank, West Valley City</titleOfIssuer>
      <CUSIPMember>88033UZU6</CUSIPMember>
      <ISINId>US88033UZU68</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MORGAN STANLEY BK NA SALT LAKE</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0081</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>16380000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>16380000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0155</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev., 0.82% Participating VRDN Series XF 22 96, (Liquidity Facility JPMorgan Chase Bank)</titleOfIssuer>
      <CUSIPMember>914440MZ2</CUSIPMember>
      <ISINId>US914440MZ21</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2039-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>JPMORGAN CHASE BANK NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0082</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5200000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5200000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0049</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>California Health Facilities Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>California Health Facilities Fing. Auth. Rev., 0.93% Participating VRDN Series DBE 80 11, (Liquidity Facility Deutsche Bank AG New York Branch)</titleOfIssuer>
      <CUSIPMember>25160RBZ5</CUSIPMember>
      <ISINId>US25160RBZ55</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2028-03-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>DEUTSCHE BANK AG NEW YORK BNCH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0093</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0064</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Suffolk Econ. Dev. Auth. Hosp. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Suffolk Econ. Dev. Auth. Hosp. Facilities Rev., 0.88% Participating VRDN Series MIZ 90 25, (Liquidity Facility Mizuho Cap. Markets LLC)</titleOfIssuer>
      <CUSIPMember>60700HDJ5</CUSIPMember>
      <ISINId>US60700HDJ59</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2035-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MIZUHO CAPITAL MARKETS LLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0088</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2230000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2230000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0021</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Virginia Pub. Bldg. Auth. Pub. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Virginia Pub. Bldg. Auth. Pub. Facilities Rev., 0.99% Bonds Series Floaters G 40, tender 08/01/2022, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RJK3</CUSIPMember>
      <ISINId>US74934RJK32</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2029-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>62</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0099</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>Y</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Lee County Arpt. Rev.</nameOfIssuer>
      <titleOfIssuer>Lee County Arpt. Rev., 0.86% Participating VRDN Series XF 11 26, (Liquidity Facility Deutsche Bank AG New York Branch)</titleOfIssuer>
      <CUSIPMember>88034YXM7</CUSIPMember>
      <ISINId>US88034YXM73</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2050-12-31</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>DEUTSCHE BANK AG NEW YORK BNCH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Palm Beach County Health Facilities Auth. Hosp. Rev.</nameOfIssuer>
      <titleOfIssuer>Palm Beach County Health Facilities Auth. Hosp. Rev., 0.89% Participating VRDN Series XG 03 70, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88035AVV0</CUSIPMember>
      <ISINId>US88035AVV06</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2049-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0089</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1860000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1860000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0018</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Chicago Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Chicago Gen. Oblig., 0.94% Participating VRDN Series XM 10 05, (Liquidity Facility Deutsche Bank AG New York Branch)</titleOfIssuer>
      <CUSIPMember>88035AN64</CUSIPMember>
      <ISINId>US88035AN640</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2034-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>DEUTSCHE BANK AG NEW YORK BNCH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0094</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Illinois Fin. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Illinois Fin. Auth. Rev., 0.91% Participating VRDN Series Floaters 017, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>76252PMA4</CUSIPMember>
      <ISINId>US76252PMA48</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-12</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-12</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2030-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>42</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0091</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1125000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1125000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0011</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Ohio Hosp. Rev.</nameOfIssuer>
      <titleOfIssuer>Ohio Hosp. Rev., 0.91% Participating VRDN Series 002, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>76252PRB7</CUSIPMember>
      <ISINId>US76252PRB75</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-12</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-12</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2050-12-31</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>42</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0091</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1000000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1000000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0009</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Metropolitan Nashville Arpt. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Metropolitan Nashville Arpt. Auth. Rev., 0.86% Participating VRDN Series 2021 XL 01 89, (Liquidity Facility Deutsche Bank AG New York Branch)</titleOfIssuer>
      <CUSIPMember>88034YWD8</CUSIPMember>
      <ISINId>US88034YWD83</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2050-12-31</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>DEUTSCHE BANK AG NEW YORK BNCH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>800000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>800000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0008</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Mississippi Bus. Fin. Corp. Rev.</nameOfIssuer>
      <titleOfIssuer>Mississippi Bus. Fin. Corp. Rev., 0.86% Participating VRDN Series 2021 XF 11 05, (Liquidity Facility Deutsche Bank AG New York Branch)</titleOfIssuer>
      <CUSIPMember>88034X5M0</CUSIPMember>
      <ISINId>US88034X5M06</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2044-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>DEUTSCHE BANK AG NEW YORK BNCH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0007</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>CommonSpirit Health</nameOfIssuer>
      <titleOfIssuer>CommonSpirit Health, 0.91% Participating VRDN Series MIZ 90 21, (Liquidity Facility Mizuho Cap. Markets LLC)</titleOfIssuer>
      <CUSIPMember>60700HCK3</CUSIPMember>
      <ISINId>US60700HCK32</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2029-05-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MIZUHO CAPITAL MARKETS LLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0091</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0007</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>North Texas Tollway Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>North Texas Tollway Auth. Rev., 0.99% Bonds Series G-112, tender 01/03/2023, (Liquidity Facility Royal Bank of Canada)</titleOfIssuer>
      <CUSIPMember>74934RC79</CUSIPMember>
      <ISINId>US74934RC795</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-01-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-01-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2043-01-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>ROYAL BK OF CDA NEW YORK BRH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>217</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0099</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>700000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>700000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0007</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>Y</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Connecticut Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Connecticut Gen. Oblig., 0.91% Participating VRDN Series Floaters 016, (Liquidity Facility Barclays Bank PLC)</titleOfIssuer>
      <CUSIPMember>76252PJH3</CUSIPMember>
      <ISINId>US76252PJH38</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-12</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-12</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2037-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BARCLAYS BANK PLC</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>42</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0091</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>400000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>400000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0004</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>New York City Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>New York City Gen. Oblig., 0.94% Participating VRDN Series 2020 003, (Liquidity Facility Wells Fargo Bank NA)</titleOfIssuer>
      <CUSIPMember>94987KRV9</CUSIPMember>
      <ISINId>US94987KRV97</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-12</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-12</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2042-04-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>WELLS FARGO BK NATL ASSN</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>42</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0094</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>300000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>300000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Metropolitan Washington DC Arpts. Auth. Sys. Rev.</nameOfIssuer>
      <titleOfIssuer>Metropolitan Washington DC Arpts. Auth. Sys. Rev., 0.91% Participating VRDN Series Floaters XF 06 94, (Liquidity Facility Bank of America NA)</titleOfIssuer>
      <CUSIPMember>88034NGU2</CUSIPMember>
      <ISINId>US88034NGU28</ISINId>
      <investmentCategory>Tender Option Bond</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2048-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BANK OF AMERICA NA</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>7</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>Y</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0091</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>170000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>170000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0002</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Billerica Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Billerica Gen. Oblig., 2.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>09005PDU1</CUSIPMember>
      <ISINId>US09005PDU12</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-01-27</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-01-27</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-01-27</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0159</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6642490.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6642490.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0063</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Boston Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Boston Gen. Oblig., 5.00% Bonds Series 2022 A</titleOfIssuer>
      <CUSIPMember>100853F39</CUSIPMember>
      <ISINId>US100853F395</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0130</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5482485.54</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5482485.54</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0052</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Boston Wtr. &amp; Swr. Commission Rev.</nameOfIssuer>
      <titleOfIssuer>Boston Wtr. &amp; Swr. Commission Rev., 0.61% Series 2022 A, LOC State Street Bank &amp; Trust Co., Boston, CP</titleOfIssuer>
      <CUSIPMember>10102NEC5</CUSIPMember>
      <otherUniqueId>IIE269000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-06</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-06</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-06</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>STATE ST BK &amp; TR CO BOSTON</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0086</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5199785.24</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5199785.24</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0049</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Easton Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Easton Gen. Oblig., 1.50%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>277587A92</CUSIPMember>
      <ISINId>US277587A926</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-17</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-17</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-17</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0096</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4300911.17</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4300911.17</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0041</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Groton</nameOfIssuer>
      <titleOfIssuer>Groton, 2.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>399316SQ2</CUSIPMember>
      <ISINId>US399316SQ21</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-02-17</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-02-17</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-02-17</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0187</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4046214.52</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4046214.52</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0038</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Holliston Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Holliston Gen. Oblig., 2.00%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>435686SJ0</CUSIPMember>
      <ISINId>US435686SJ08</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-22</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-22</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-22</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4156819.64</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4156819.64</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0039</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Littleton Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Littleton Gen. Oblig., 2.00%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>537802UR9</CUSIPMember>
      <ISINId>US537802UR97</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-18</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-18</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-11-18</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0141</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3277807.99</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3277807.99</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0031</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Bay Trans. Auth. Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Bay Trans. Auth. Sales Tax Rev., 5.00% Bonds Series 2005 A</titleOfIssuer>
      <CUSIPMember>575579GZ4</CUSIPMember>
      <ISINId>US575579GZ47</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1003149.50</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1003149.50</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0010</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Elec. Util. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Elec. Util. Rev., 0.95% Bonds Series 2022, tender 06/02/2022, (Massachusetts Elec. Co. Guaranteed), CP Mode</titleOfIssuer>
      <CUSIPMember>57584TAA8</CUSIPMember>
      <otherUniqueId>JBH126000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-02</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-02</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-02</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>Y</securityGuaranteeFlag>
      <guarantor>
        <identityOfTheGuarantor>MASS ELECTRIC CO</identityOfTheGuarantor>
        <amountProvidedByGuarantor>1.0000</amountProvidedByGuarantor>
        <guarantorRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </guarantorRatingOrNRSRO>
      </guarantor>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0095</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>10500000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>10500000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0100</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Dev. Fin. Agcy. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Dev. Fin. Agcy. Rev., 5.25% Bonds Series 2012 A, (Pre-Refunded to 7/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>57583USE9</CUSIPMember>
      <ISINId>US57583USE90</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2042-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0120</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1103648.48</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1103648.48</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0010</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Edl. Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Edl. Fing. Auth. Rev., 5.00% Bonds Series 2016 J</titleOfIssuer>
      <CUSIPMember>57563RNJ4</CUSIPMember>
      <ISINId>US57563RNJ40</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0164</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3805326.57</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3805326.57</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0036</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Edl. Fing. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Edl. Fing. Auth. Rev., 5.00% Bonds Series 2013</titleOfIssuer>
      <CUSIPMember>57563RKU2</CUSIPMember>
      <ISINId>US57563RKU22</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0161</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8322790.14</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8322790.14</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0079</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 1.70% Bonds Series D2, tender 08/01/2022</titleOfIssuer>
      <CUSIPMember>57582P5Q9</CUSIPMember>
      <ISINId>US57582P5Q94</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2043-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>MASSACHUSETTS ST</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>62</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0137</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1365675.95</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1365675.95</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0013</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2014 C, (Pre-Refunded to 7/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>57582P3Y4</CUSIPMember>
      <ISINId>US57582P3Y47</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0114</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1148615.68</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1148615.68</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0011</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2016 A</titleOfIssuer>
      <CUSIPMember>57582RHR0</CUSIPMember>
      <ISINId>US57582RHR03</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0108</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>581864.99</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>581864.99</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0006</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2013 B</titleOfIssuer>
      <CUSIPMember>57582PQ60</CUSIPMember>
      <ISINId>US57582PQ607</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0109</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>593806.44</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>593806.44</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0006</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2014 E, (Pre-Refunded to 9/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>57582P6P0</CUSIPMember>
      <ISINId>US57582P6P03</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-09-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-09-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2027-09-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0119</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2326722.32</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2326722.32</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0022</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2017 C</titleOfIssuer>
      <CUSIPMember>57582RNH5</CUSIPMember>
      <ISINId>US57582RNH56</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-10-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-10-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0117</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>486079.68</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>486079.68</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0005</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2014 F, (Pre-Refunded to 11/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>57582RAD8</CUSIPMember>
      <ISINId>US57582RAD89</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0128</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3990360.87</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3990360.87</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0038</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.00% Bonds Series 2014 F, (Pre-Refunded to 11/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>57582RAA4</CUSIPMember>
      <ISINId>US57582RAA41</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0128</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3939592.92</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3939592.92</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0037</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Gen. Oblig., 5.50% Bonds Series C</titleOfIssuer>
      <CUSIPMember>57582NH81</CUSIPMember>
      <ISINId>US57582NH817</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-12-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-12-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-12-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0128</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>551332.39</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>551332.39</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0005</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.42% Bonds Series 2022 H1, tender 06/01/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CV93</CUSIPMember>
      <otherUniqueId>IGJ425000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0087</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>7899902.04</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>7899902.04</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0075</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.52% Bonds Series 2022 H1, tender 06/02/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CV93</CUSIPMember>
      <otherUniqueId>IIC499000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-02</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-02</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-02</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0079</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6199908.24</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6199908.24</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0059</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.52% Bonds Series 2022 H1, tender 06/03/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CV93</CUSIPMember>
      <otherUniqueId>IID188000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-03</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0052</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>7550000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>7550000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0072</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 0.63% Bonds Series 2022 H2, tender 06/08/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CW27</CUSIPMember>
      <otherUniqueId>IIE232000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-08</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-08</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-08</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0083</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6199726.58</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6199726.58</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0059</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 1.02% Bonds Series 2022 H2, tender 07/06/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CW27</CUSIPMember>
      <otherUniqueId>IJI004000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-06</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-06</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-06</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0123</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>9582999.61</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>9582999.61</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0091</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 1.10% Bonds Series 2022, tender 07/11/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CW27</CUSIPMember>
      <otherUniqueId>JBB876000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-07-11</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-07-11</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-07-11</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0100</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8300925.45</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8300925.45</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0079</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 1.35% Bonds Series 2022 H2, tender 08/04/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CW27</CUSIPMember>
      <otherUniqueId>JBD048000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-04</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-04</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-04</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0139</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5999455.80</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5999455.80</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0057</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Health &amp; Edl. Facilities Auth. Rev., 1.38% Bonds Series 2022, tender 08/03/2022, CP Mode</titleOfIssuer>
      <CUSIPMember>57586CW27</CUSIPMember>
      <otherUniqueId>JBC349000</otherUniqueId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-03</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>PARTNERS HEALTHCARE SYS INC</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0147</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>8448503.51</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>8448503.51</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0080</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Hsg. Fin. Auth.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Hsg. Fin. Auth., 0.25%  RAN Series 2021</titleOfIssuer>
      <CUSIPMember>57587GLS2</CUSIPMember>
      <ISINId>US57587GLS20</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-12-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-12-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-12-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>MA SF HOUSING REVENUE 9/12/85</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0264</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3409316.91</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3409316.91</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0032</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 5.00% Bonds Series 2012 B, (Pre-Refunded to 8/15/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576000NG4</CUSIPMember>
      <ISINId>US576000NG48</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2029-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>645016.64</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>645016.64</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0006</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 5.00% Bonds Series 2012 B, (Pre-Refunded to 8/15/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576000NH2</CUSIPMember>
      <ISINId>US576000NH21</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2030-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2000559.42</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2000559.42</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0019</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 5.00% Bonds Series A, (Pre-Refunded to 8/15/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576000MN0</CUSIPMember>
      <ISINId>US576000MN08</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2030-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>161254.16</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>161254.16</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0002</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 5.00% Bonds Series 2012 A, (Pre-Refunded to 8/15/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576000YB3</CUSIPMember>
      <ISINId>US576000YB32</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2025-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5749718.64</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5749718.64</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0055</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts School Bldg. Auth. Dedicated Sales Tax Rev., 5.00% Bonds Series 2012 A, (Pre-Refunded to 8/15/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576000YC1</CUSIPMember>
      <ISINId>US576000YC15</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3960805.31</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3960805.31</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0038</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 5.00% Bonds Series 2013 A</titleOfIssuer>
      <CUSIPMember>576051HD1</CUSIPMember>
      <ISINId>US576051HD13</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0110</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>503209.05</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>503209.05</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0005</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 5.00% Bonds Series 2012 B, (Pre-Refunded to 8/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576051FZ4</CUSIPMember>
      <ISINId>US576051FZ43</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2028-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2420234.47</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2420234.47</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0023</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 5.00% Bonds Series 2012 B, (Pre-Refunded to 8/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>576051GB6</CUSIPMember>
      <ISINId>US576051GB65</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2026-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0115</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>291837.01</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>291837.01</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0003</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev.</nameOfIssuer>
      <titleOfIssuer>Massachusetts Wtr. Resources Auth. Wtr. &amp; Swr. Rev., 5.50% Bonds Series 2022 J</titleOfIssuer>
      <CUSIPMember>576049ZA1</CUSIPMember>
      <ISINId>US576049ZA19</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0111</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1636754.11</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1636754.11</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0016</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Nantucket Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Nantucket Gen. Oblig., 1.25%  BAN Series 2021 B</titleOfIssuer>
      <CUSIPMember>630191S88</CUSIPMember>
      <ISINId>US630191S889</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-30</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-30</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-30</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0110</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2750325.33</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2750325.33</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0026</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Nantucket Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Nantucket Gen. Oblig., 1.50%  BAN Series 2021 B</titleOfIssuer>
      <CUSIPMember>630191U93</CUSIPMember>
      <ISINId>US630191U935</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-30</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-30</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-30</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0101</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>9003596.40</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>9003596.40</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0085</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Nantucket Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Nantucket Gen. Oblig., 1.50%  BAN Series 2021 A</titleOfIssuer>
      <CUSIPMember>630191U85</CUSIPMember>
      <ISINId>US630191U851</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-10-14</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-10-14</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-10-14</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0134</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>21494263.54</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>21494263.54</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0204</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Natick Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Natick Gen. Oblig., 2.00%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>632363S24</CUSIPMember>
      <ISINId>US632363S247</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-10</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-10</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-10</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0111</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1987474.77</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1987474.77</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0019</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Natick Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Natick Gen. Oblig., 3.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>632363S32</CUSIPMember>
      <ISINId>US632363S320</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-25</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-25</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-25</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0157</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1805866.92</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1805866.92</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0017</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Needham Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Needham Gen. Oblig., 1.50%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>6398466V1</CUSIPMember>
      <ISINId>US6398466V18</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0094</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1361257.77</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1361257.77</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0013</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Needham Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Needham Gen. Oblig., 5.00% Bonds Series 2022</titleOfIssuer>
      <CUSIPMember>6398466D1</CUSIPMember>
      <ISINId>US6398466D10</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-15</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0128</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1612092.48</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1612092.48</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0015</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>North Middlesex Reg'l. School District</nameOfIssuer>
      <titleOfIssuer>North Middlesex Reg'l. School District, 3.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>661139NQ4</CUSIPMember>
      <ISINId>US661139NQ40</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-02-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-02-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-02-03</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0172</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>5478434.66</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>5478434.66</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0052</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Salem Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Salem Gen. Oblig., 3.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>7941992Q1</CUSIPMember>
      <ISINId>US7941992Q14</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-18</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-18</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-11-18</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0163</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6323004.62</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6323004.62</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0060</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Somerville Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Somerville Gen. Oblig., 2.00%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>835241FS4</CUSIPMember>
      <ISINId>US835241FS43</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-03</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-03</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-03</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>SOMERVILLE MA</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0104</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>11500266.80</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>11500266.80</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0109</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Somerville Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Somerville Gen. Oblig., 5.00% Bonds Series 2021</titleOfIssuer>
      <CUSIPMember>835241EL0</CUSIPMember>
      <ISINId>US835241EL09</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>Y</securityEnhancementsFlag>
      <enhancementProvider>
        <identityOfTheEnhancementProvider>SOMERVILLE MA</identityOfTheEnhancementProvider>
        <typeOfEnhancement>OBLIGOR</typeOfEnhancement>
        <amountProvidedByEnhancement>1.0000</amountProvidedByEnhancement>
        <enhancementRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </enhancementRatingOrNRSRO>
      </enhancementProvider>
      <yieldOfTheSecurityAsOfReportingDate>0.0000</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>835000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>835000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0008</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Town of Tisbury Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Town of Tisbury Gen. Oblig., 1.50%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>888240EY0</CUSIPMember>
      <ISINId>US888240EY04</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-16</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-16</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-16</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0132</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>6502080.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>6502080.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0062</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev., 4.00% Bonds Series 2013 1, (Pre-Refunded to 11/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>914440MJ8</CUSIPMember>
      <ISINId>US914440MJ88</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2043-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0127</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2528115.50</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2528115.50</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0024</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Univ. of Massachusetts Bldg. Auth. Facilities Rev., 5.00% Bonds Series 2013, (Pre-Refunded to 11/1/2022 @ 100)</titleOfIssuer>
      <CUSIPMember>914440MW9</CUSIPMember>
      <ISINId>US914440MW99</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-11-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-11-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2039-11-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0128</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1218430.80</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1218430.80</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0012</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Watertown Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Watertown Gen. Oblig., 2.00%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>942044WA2</CUSIPMember>
      <ISINId>US942044WA29</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-24</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-24</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-24</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0119</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3134242.97</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3134242.97</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0030</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Westford Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Westford Gen. Oblig., 1.50%  BAN Series 2021</titleOfIssuer>
      <CUSIPMember>960266F82</CUSIPMember>
      <ISINId>US960266F829</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-22</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-22</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-06-22</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0118</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>3600535.68</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>3600535.68</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0034</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Westwood Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Westwood Gen. Oblig., 2.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>961777H44</CUSIPMember>
      <ISINId>US961777H440</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-08-19</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-08-19</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-08-19</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0110</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>2003822.20</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>2003822.20</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0019</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Worcester Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Worcester Gen. Oblig., 3.00%  BAN Series 2022</titleOfIssuer>
      <CUSIPMember>981306G31</CUSIPMember>
      <ISINId>US981306G313</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-03-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-03-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-03-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0188</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>10486479.12</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>10486479.12</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0099</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Worcester Gen. Oblig.</nameOfIssuer>
      <titleOfIssuer>Worcester Gen. Oblig., 5.00% Bonds Series 2022</titleOfIssuer>
      <CUSIPMember>981306C76</CUSIPMember>
      <ISINId>US981306C767</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2023-02-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2023-02-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2023-02-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0141</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>4437960.15</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>4437960.15</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0042</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Guam Int'l. Arpt. Auth. Rev.</nameOfIssuer>
      <titleOfIssuer>Guam Int'l. Arpt. Auth. Rev., 5.00% Bonds Series 2019 A, (Escrowed to Maturity)</titleOfIssuer>
      <CUSIPMember>40064RDY2</CUSIPMember>
      <ISINId>US40064RDY27</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-10-01</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-10-01</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2022-10-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0157</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>1178151.92</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>1178151.92</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0011</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Kent Hosp. Fin. Auth. Hosp. Facilities Rev.</nameOfIssuer>
      <titleOfIssuer>Kent Hosp. Fin. Auth. Hosp. Facilities Rev., 1.04% Bonds (Spectrum Health Sys. Proj.) Series 2015 A, tender 12/27/2022</titleOfIssuer>
      <CUSIPMember>490580EG8</CUSIPMember>
      <ISINId>US490580EG82</ISINId>
      <investmentCategory>Other Municipal Security</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-12-27</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-12-27</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2047-01-15</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>Y</securityDemandFeatureFlag>
      <demandFeature>
        <identityOfDemandFeatureIssuer>BEAUMONT-SPECTRUM HLTH</identityOfDemandFeatureIssuer>
        <amountProvidedByDemandFeatureIssuer>1.0000</amountProvidedByDemandFeatureIssuer>
        <remainingPeriodDemandFeature>210</remainingPeriodDemandFeature>
        <demandFeatureConditionalFlag>N</demandFeatureConditionalFlag>
        <demandFeatureRatingOrNRSRO>
          <nameOfNRSRO>N/A</nameOfNRSRO>
          <rating>N/A</rating>
        </demandFeatureRatingOrNRSRO>
      </demandFeature>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0104</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>100000.00</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>100000.00</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0001</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>N</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>Fidelity Revere Str Trust</nameOfIssuer>
      <titleOfIssuer>Fidelity Municipal Cash Central Fund, 0.75%</titleOfIssuer>
      <CUSIPMember>31635A204</CUSIPMember>
      <LEIID>549300BDV45LJNXBZC55</LEIID>
      <ISINId>US31635A2042</ISINId>
      <cik>0001022695</cik>
      <investmentCategory>Investment Company</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>N/A</nameOfNRSRO>
        <rating>N/A</rating>
      </NRSRO>
      <investmentMaturityDateWAM>2022-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2022-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2038-02-01</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0075</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>139907693.30</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>139907693.30</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.1327</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>N</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <signature>
      <registrant>Fidelity Massachusetts Municipal Trust: Fidelity Massachusetts Municipal Money Market Fund</registrant>
      <signatureDate>2022-06-02</signatureDate>
      <signature>Laura M. Del Prato</signature>
      <nameOfSigningOfficer>Laura M. Del Prato</nameOfSigningOfficer>
      <titleOfSigningOfficer>President and Treasurer</titleOfSigningOfficer>
    </signature>
  </formData>
</edgarSubmission>
