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<edgarSubmission xsi:schemaLocation="http://www.sec.gov/edgar/nmfp2 eis_NMFP2_Filer.xsd" xmlns="http://www.sec.gov/edgar/nmfp2" xmlns:common="http://www.sec.gov/edgar/common" xmlns:nmfp2common="http://www.sec.gov/edgar/nmfp2common" xmlns:statecodes="http://www.sec.gov/edgar/statecodes" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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    <submissionType>N-MFP2</submissionType>
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      <filer>
        <filerCredentials>
          <cik>0000097098</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
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      <notifications></notifications>
      <notifications></notifications>
      <notifications></notifications>
      <notifications></notifications>
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    <generalInfo>
      <reportDate>2018-04-30</reportDate>
      <cik>0000097098</cik>
      <seriesId>S000001478</seriesId>
      <totalShareClassesInSeries>6</totalShareClassesInSeries>
      <finalFilingFlag>N</finalFilingFlag>
      <fundAcqrdOrMrgdWthAnthrFlag>N</fundAcqrdOrMrgdWthAnthrFlag>
    </generalInfo>
    <seriesLevelInfo>
      <securitiesActFileNumber>002-47015</securitiesActFileNumber>
      <adviser>
        <adviserName>BlackRock Advisors, LLC</adviserName>
        <adviserFileNumber>801-47710</adviserFileNumber>
      </adviser>
      <indpPubAccountant>
        <name>Deloitte &amp; Touche LLP</name>
        <city>Philadelphia</city>
        <stateCountry>PA</stateCountry>
      </indpPubAccountant>
      <administrator>
        <administratorName>BlackRock Advisors, LLC</administratorName>
      </administrator>
      <administrator>
        <administratorName>JPMorgan Chase Bank, N.A.</administratorName>
      </administrator>
      <transferAgent>
        <name>BNY Mellon Investment Servicing (US) Inc.</name>
        <cik>0000849542</cik>
        <fileNumber>084-01761</fileNumber>
      </transferAgent>
      <feederFundFlag>N</feederFundFlag>
      <masterFundFlag>N</masterFundFlag>
      <seriesFundInsuCmpnySepAccntFlag>N</seriesFundInsuCmpnySepAccntFlag>
      <moneyMarketFundCategory>Exempt Government</moneyMarketFundCategory>
      <fundExemptRetailFlag>N</fundExemptRetailFlag>
      <averagePortfolioMaturity>55</averagePortfolioMaturity>
      <averageLifeMaturity>114</averageLifeMaturity>
      <totalValueDailyLiquidAssets>
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        <nmfp2common:fridayDay4>1.0000</nmfp2common:fridayDay4>
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      <percentageWeeklyLiquidAssets>
        <nmfp2common:fridayWeek1>1.0000</nmfp2common:fridayWeek1>
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        <nmfp2common:fridayWeek4>1.0000</nmfp2common:fridayWeek4>
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      <totalValuePortfolioSecurities>27221265315.72</totalValuePortfolioSecurities>
      <amortizedCostPortfolioSecurities>27221706460.18</amortizedCostPortfolioSecurities>
      <totalValueOtherAssets>7562727.95</totalValueOtherAssets>
      <totalValueLiabilities>1310627094.98</totalValueLiabilities>
      <netAssetOfSeries>26836440675.08</netAssetOfSeries>
      <numberOfSharesOutstanding>26835947353.86</numberOfSharesOutstanding>
      <stablePricePerShare>1.0000</stablePricePerShare>
      <sevenDayGrossYield>0.0175</sevenDayGrossYield>
      <netAssetValue>
        <nmfp2common:fridayWeek1>1.0001</nmfp2common:fridayWeek1>
        <nmfp2common:fridayWeek2>1.0001</nmfp2common:fridayWeek2>
        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
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    </seriesLevelInfo>
    <classLevelInfo>
      <classesId>C000003956</classesId>
      <minInitialInvestment>5000.00</minInitialInvestment>
      <netAssetsOfClass>518296789.28</netAssetsOfClass>
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      <netAssetPerShare>
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        <nmfp2common:fridayWeek2>1.0001</nmfp2common:fridayWeek2>
        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
        <nmfp2common:fridayWeek4>1.0001</nmfp2common:fridayWeek4>
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      <fridayWeek1>
        <weeklyGrossSubscriptions>47622517.49</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>1154543.76</weeklyGrossRedemptions>
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      <fridayWeek2>
        <weeklyGrossSubscriptions>37909601.51</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>1454570.78</weeklyGrossRedemptions>
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      <fridayWeek3>
        <weeklyGrossSubscriptions>38519782.64</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>334065607.32</weeklyGrossRedemptions>
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      <fridayWeek4>
        <weeklyGrossSubscriptions>58984228.10</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>21512407.46</weeklyGrossRedemptions>
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      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>188432347.55</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>358272939.94</weeklyGrossRedemptions>
      </totalForTheMonthReported>
      <sevenDayNetYield>0.0148</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 14230.45;</nameOfPersonDescExpensePay>
    </classLevelInfo>
    <classLevelInfo>
      <classesId>C000003957</classesId>
      <minInitialInvestment>5000.00</minInitialInvestment>
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      <netAssetPerShare>
        <nmfp2common:fridayWeek1>1.0001</nmfp2common:fridayWeek1>
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        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
        <nmfp2common:fridayWeek4>1.0001</nmfp2common:fridayWeek4>
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        <weeklyGrossSubscriptions>112237.32</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>12905.96</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>3182.91</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>195032.51</weeklyGrossRedemptions>
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      <fridayWeek3>
        <weeklyGrossSubscriptions>358215.04</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>20570.67</weeklyGrossRedemptions>
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      <fridayWeek4>
        <weeklyGrossSubscriptions>16417.30</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>32099.10</weeklyGrossRedemptions>
      </fridayWeek4>
      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>525237.18</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>3268866.36</weeklyGrossRedemptions>
      </totalForTheMonthReported>
      <sevenDayNetYield>0.0108</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 497.21;</nameOfPersonDescExpensePay>
    </classLevelInfo>
    <classLevelInfo>
      <classesId>C000003955</classesId>
      <minInitialInvestment>5000.00</minInitialInvestment>
      <netAssetsOfClass>461762410.16</netAssetsOfClass>
      <numberOfSharesOutstanding>461753921.81</numberOfSharesOutstanding>
      <netAssetPerShare>
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        <nmfp2common:fridayWeek2>1.0001</nmfp2common:fridayWeek2>
        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
        <nmfp2common:fridayWeek4>1.0001</nmfp2common:fridayWeek4>
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        <weeklyGrossSubscriptions>23027792.41</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>22786095.27</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>52459007.96</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>27835973.92</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>9589661.09</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>103373140.03</weeklyGrossRedemptions>
      </fridayWeek4>
      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>237034919.14</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>262897940.17</weeklyGrossRedemptions>
      </totalForTheMonthReported>
      <sevenDayNetYield>0.0133</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 11188.72;</nameOfPersonDescExpensePay>
    </classLevelInfo>
    <classLevelInfo>
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      <minInitialInvestment>3000000.00</minInitialInvestment>
      <netAssetsOfClass>25802826365.11</netAssetsOfClass>
      <numberOfSharesOutstanding>25802352044.31</numberOfSharesOutstanding>
      <netAssetPerShare>
        <nmfp2common:fridayWeek1>1.0001</nmfp2common:fridayWeek1>
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        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
        <nmfp2common:fridayWeek4>1.0001</nmfp2common:fridayWeek4>
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        <weeklyGrossSubscriptions>1236396938.98</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>1697008461.79</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>1647699575.72</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>1356646441.12</weeklyGrossRedemptions>
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      <fridayWeek4>
        <weeklyGrossSubscriptions>1178675615.81</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>1970559159.46</weeklyGrossRedemptions>
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      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>5948527794.19</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>7434360648.90</weeklyGrossRedemptions>
      </totalForTheMonthReported>
      <sevenDayNetYield>0.0158</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 578437.71;</nameOfPersonDescExpensePay>
    </classLevelInfo>
    <classLevelInfo>
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      <minInitialInvestment>5000.00</minInitialInvestment>
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      <numberOfSharesOutstanding>2055727.99</numberOfSharesOutstanding>
      <netAssetPerShare>
        <nmfp2common:fridayWeek1>1.0001</nmfp2common:fridayWeek1>
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        <nmfp2common:fridayWeek3>1.0000</nmfp2common:fridayWeek3>
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        <weeklyGrossSubscriptions>14908.28</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>74008460.08</weeklyGrossRedemptions>
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      <fridayWeek2>
        <weeklyGrossSubscriptions>0.16</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>0.33</weeklyGrossRedemptions>
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      <fridayWeek3>
        <weeklyGrossSubscriptions>794395.11</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>0.36</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>250914.90</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>237.53</weeklyGrossRedemptions>
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      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>1060219.78</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>74008699.05</weeklyGrossRedemptions>
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      <sevenDayNetYield>0.0118</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 136.99;</nameOfPersonDescExpensePay>
    </classLevelInfo>
    <classLevelInfo>
      <classesId>C000060559</classesId>
      <minInitialInvestment>1.00</minInitialInvestment>
      <netAssetsOfClass>31795666.49</netAssetsOfClass>
      <numberOfSharesOutstanding>31795082.01</numberOfSharesOutstanding>
      <netAssetPerShare>
        <nmfp2common:fridayWeek1>1.0001</nmfp2common:fridayWeek1>
        <nmfp2common:fridayWeek2>1.0001</nmfp2common:fridayWeek2>
        <nmfp2common:fridayWeek3>1.0001</nmfp2common:fridayWeek3>
        <nmfp2common:fridayWeek4>1.0001</nmfp2common:fridayWeek4>
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      <fridayWeek1>
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        <weeklyGrossRedemptions>5130638.17</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>1021895.43</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>3460685.94</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>1226715.11</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>3135145.78</weeklyGrossRedemptions>
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        <weeklyGrossSubscriptions>409604.81</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>590265.57</weeklyGrossRedemptions>
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      <totalForTheMonthReported>
        <weeklyGrossSubscriptions>11622341.35</weeklyGrossSubscriptions>
        <weeklyGrossRedemptions>12696817.15</weeklyGrossRedemptions>
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      <sevenDayNetYield>0.0075</sevenDayNetYield>
      <personPayForFundFlag>Y</personPayForFundFlag>
      <nameOfPersonDescExpensePay>BlackRock Advisors, LLC, Management Fees, 753.45;
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    </classLevelInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Bill 1.620</titleOfIssuer>
      <CUSIPMember>912796PJ2</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912796PJ22</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>A-1+</rating>
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      <investmentMaturityDateWAM>2018-06-07</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-06-07</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2018-06-07</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0162</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>332444129.67</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>332444129.67</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0124</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Bill 1.637</titleOfIssuer>
      <CUSIPMember>912796PL7</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912796PL77</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
        <rating>Govt</rating>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>A-1+</rating>
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      <investmentMaturityDateWAM>2018-06-14</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-06-14</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2018-06-14</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
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      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0164</yieldOfTheSecurityAsOfReportingDate>
      <includingValueOfAnySponsorSupport>213978261.88</includingValueOfAnySponsorSupport>
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      <percentageOfMoneyMarketFundNetAssets>0.0080</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
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      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Bill 1.693</titleOfIssuer>
      <CUSIPMember>912796PM5</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912796PM50</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>A-1+</rating>
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      <investmentMaturityDateWAM>2018-06-28</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-06-28</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2018-06-28</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
      <securityGuaranteeFlag>N</securityGuaranteeFlag>
      <securityEnhancementsFlag>N</securityEnhancementsFlag>
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      <includingValueOfAnySponsorSupport>835304367.66</includingValueOfAnySponsorSupport>
      <excludingValueOfAnySponsorSupport>835304367.66</excludingValueOfAnySponsorSupport>
      <percentageOfMoneyMarketFundNetAssets>0.0311</percentageOfMoneyMarketFundNetAssets>
      <securityCategorizedAtLevel3Flag>N</securityCategorizedAtLevel3Flag>
      <dailyLiquidAssetSecurityFlag>Y</dailyLiquidAssetSecurityFlag>
      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
    </scheduleOfPortfolioSecuritiesInfo>
    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Bill 1.752</titleOfIssuer>
      <CUSIPMember>912796PN3</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912796PN34</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
      <NRSRO>
        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>A-1+</rating>
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      <investmentMaturityDateWAM>2018-07-05</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-07-05</investmentMaturityDateWAL>
      <finalLegalInvestmentMaturityDate>2018-07-05</finalLegalInvestmentMaturityDate>
      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
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      <securityEnhancementsFlag>N</securityEnhancementsFlag>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.872</titleOfIssuer>
      <CUSIPMember>9128284K3</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US9128284K35</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.500</titleOfIssuer>
      <CUSIPMember>912828A75</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828A750</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.500</titleOfIssuer>
      <CUSIPMember>912828B33</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828B337</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAM>2019-01-31</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2019-01-31</investmentMaturityDateWAL>
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      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 0.875</titleOfIssuer>
      <CUSIPMember>912828L81</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828L815</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAM>2018-10-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-10-15</investmentMaturityDateWAL>
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      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
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      <securityEnhancementsFlag>N</securityEnhancementsFlag>
      <yieldOfTheSecurityAsOfReportingDate>0.0203</yieldOfTheSecurityAsOfReportingDate>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.125</titleOfIssuer>
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      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828N639</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAM>2019-01-15</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2019-01-15</investmentMaturityDateWAL>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 0.875</titleOfIssuer>
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      <LEIID>254900HROIFWPRGM1V77</LEIID>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <NRSRO>
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      <NRSRO>
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      <NRSRO>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <ISINId>US912828T750</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>AA+</rating>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.250</titleOfIssuer>
      <CUSIPMember>912828U99</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828U998</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>AA+</rating>
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      <investmentMaturityDateWAM>2018-12-31</investmentMaturityDateWAM>
      <investmentMaturityDateWAL>2018-12-31</investmentMaturityDateWAL>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.125</titleOfIssuer>
      <CUSIPMember>912828V56</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828V566</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
      <securityEligibilityFlag>Y</securityEligibilityFlag>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
        <rating>Govt</rating>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
        <rating>AA+</rating>
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      <investmentMaturityDateWAL>2019-01-31</investmentMaturityDateWAL>
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      <yieldOfTheSecurityAsOfReportingDate>0.0222</yieldOfTheSecurityAsOfReportingDate>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.984</titleOfIssuer>
      <CUSIPMember>912828V64</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828V640</ISINId>
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      <securityEligibilityFlag>Y</securityEligibilityFlag>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAM>2018-05-01</investmentMaturityDateWAM>
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      <securityDemandFeatureFlag>N</securityDemandFeatureFlag>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <CUSIPMember>912828VE7</CUSIPMember>
      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828VE70</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828VK31</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAL>2018-06-30</investmentMaturityDateWAL>
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      <securityEnhancementsFlag>N</securityEnhancementsFlag>
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      <excludingValueOfAnySponsorSupport>99936696.00</excludingValueOfAnySponsorSupport>
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      <weeklyLiquidAssetSecurityFlag>Y</weeklyLiquidAssetSecurityFlag>
      <illiquidSecurityFlag>N</illiquidSecurityFlag>
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    <scheduleOfPortfolioSecuritiesInfo>
      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
      <titleOfIssuer>U.S. Treasury Notes 1.375</titleOfIssuer>
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      <LEIID>254900HROIFWPRGM1V77</LEIID>
      <ISINId>US912828VQ01</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Notes</nameOfIssuer>
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      <ISINId>US912828X547</ISINId>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <nameOfIssuer>U.S. Treasury Bill</nameOfIssuer>
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      <ISINId>US912796NZ81</ISINId>
      <investmentCategory>U.S. Treasury Debt</investmentCategory>
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      <NRSRO>
        <nameOfNRSRO>Moody's</nameOfNRSRO>
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      <NRSRO>
        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <investmentMaturityDateWAM>2018-10-11</investmentMaturityDateWAM>
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        <nameOfNRSRO>Fitch</nameOfNRSRO>
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        <nameOfNRSRO>Moody's</nameOfNRSRO>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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      <CUSIPMember>912796PF0</CUSIPMember>
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        <nameOfNRSRO>Standard &amp; Poor's</nameOfNRSRO>
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    <signature>
      <registrant>BlackRock Liquidity Funds</registrant>
      <signatureDate>2018-05-04</signatureDate>
      <signature>/s/Neal J. Andrews</signature>
      <nameOfSigningOfficer>Neal J. Andrews</nameOfSigningOfficer>
      <titleOfSigningOfficer>Chief Financial Officer</titleOfSigningOfficer>
    </signature>
  </formData>
</edgarSubmission>
