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        <name>Doylestown Hospital Authority</name>
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          <maturityDt>2045-07-01</maturityDt>
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        <name>Tennessee Energy Acquisition Corp.</name>
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          <isin value="US880443BQ82"/>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2023-09-01</maturityDt>
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        <name>Puerto Rico Sales Tax Financing Corp.</name>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2024-07-01</maturityDt>
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        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
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        <name>Morgan State University</name>
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        <name>Escambia County Health Facilities Authority</name>
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        <name>Iowa Student Loan Liquidity Corp.</name>
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        <name>Puerto Rico Convention Center District Authority</name>
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        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
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      <invstOrSec>
        <name>Metropolitan Transportation Authority</name>
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          <isin value="US59261AVV69"/>
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        <curCd>USD</curCd>
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        <invCountry>US</invCountry>
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      <invstOrSec>
        <name>City of Baltimore MD</name>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2042-07-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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      <invstOrSec>
        <name>Texas Private Activity Bond Surface Transportation Corp.</name>
        <lei>N/A</lei>
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          <isin value="US882667AD00"/>
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        <curCd>USD</curCd>
        <valUSD>135742.50000000</valUSD>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2040-06-30</maturityDt>
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          <annualizedRt>7.00000000</annualizedRt>
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      <invstOrSec>
        <name>County of Howard MD</name>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2048-02-15</maturityDt>
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          <annualizedRt>4.00000000</annualizedRt>
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      <invstOrSec>
        <name>Michigan Finance Authority</name>
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          <isin value="US59447PA274"/>
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        <curCd>USD</curCd>
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        <invCountry>US</invCountry>
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          <maturityDt>2032-07-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Metropolitan Washington Airports Authority</name>
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          <isin value="US592646T522"/>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2039-10-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Washington Metropolitan Area Transit Authority</name>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2042-07-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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      <invstOrSec>
        <name>Maryland Economic Development Corp.</name>
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          <isin value="US57420NBY67"/>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2031-06-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Maryland Community Development Administration</name>
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          <maturityDt>2049-07-01</maturityDt>
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        <name>Michigan Finance Authority</name>
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          <maturityDt>2036-07-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Mississippi Development Bank</name>
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          <maturityDt>2040-12-01</maturityDt>
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          <annualizedRt>6.87500000</annualizedRt>
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        <name>Maryland Community Development Administration</name>
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          <maturityDt>2049-07-01</maturityDt>
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        <name>Virgin Islands Public Finance Authority</name>
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        <invCountry>VI</invCountry>

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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2025-10-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <invCountry>PR</invCountry>

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        <name>Puerto Rico Electric Power Authority</name>
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        <invCountry>PR</invCountry>

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        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
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        <name>New Jersey Economic Development Authority</name>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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        <name>Sales Tax Securitization Corp.</name>
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        <name>Maryland Economic Development Corp.</name>
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        <name>Michigan Finance Authority</name>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2035-07-01</maturityDt>
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      <invstOrSec>
        <name>Toll Road Investors Partnership II LP</name>
        <lei>N/A</lei>
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          <isin value="US88948ABM80"/>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2043-02-15</maturityDt>
          <couponKind>None</couponKind>
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      <invstOrSec>
        <name>New Jersey Transportation Trust Fund Authority</name>
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          <isin value="US646136EB34"/>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2021-12-15</maturityDt>
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          <annualizedRt>5.25000000</annualizedRt>
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      <invstOrSec>
        <name>Washington Metropolitan Area Transit Authority</name>
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          <isin value="US938782GM52"/>
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        <curCd>USD</curCd>
        <valUSD>532435.20000000</valUSD>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2037-07-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
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          <isin value="US574218T522"/>
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        <balance>1000000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>1181080.00000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2046-12-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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        <name>State of Illinois</name>
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          <isin value="US4521526L09"/>
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        <balance>160000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>180033.60000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2039-05-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.50000000</annualizedRt>
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      <invstOrSec>
        <name>Sales Tax Securitization Corp.</name>
        <lei>N/A</lei>
        <title>Sales Tax Securitization Corp.</title>
        <cusip>79467BCU7</cusip>
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          <isin value="US79467BCU70"/>
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        <balance>15000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>18290.25000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2029-01-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Delaware Valley Regional Finance Authority</name>
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        <curCd>USD</curCd>
        <valUSD>586463.50000000</valUSD>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2037-06-01</maturityDt>
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          <annualizedRt>0.98399800</annualizedRt>
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        <name>Texas Municipal Gas Acquisition &amp; Supply Corp. III</name>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2031-12-15</maturityDt>
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      <invstOrSec>
        <name>Maryland Economic Development Corp.</name>
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        <fairValLevel>2</fairValLevel>
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        <name>Puerto Rico Highway &amp; Transportation Authority</name>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2031-07-01</maturityDt>
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        <name>Puerto Rico Sales Tax Financing Corp.</name>
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          <maturityDt>2040-07-01</maturityDt>
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        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
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        <name>Metropolitan Pier &amp; Exposition Authority</name>
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        <name>Maryland Economic Development Corp.</name>
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        <name>Puerto Rico Electric Power Authority</name>
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        <assetCat>DBT</assetCat>
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        <invCountry>PR</invCountry>

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      <invstOrSec>
        <name>Sales Tax Securitization Corp.</name>
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      <invstOrSec>
        <name>Sales Tax Securitization Corp.</name>
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          <isin value="US79467BCW37"/>
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        <name>Commonwealth of Puerto Rico</name>
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        <fairValLevel>2</fairValLevel>
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        <name>Maryland Economic Development Corp.</name>
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        <name>Sales Tax Securitization Corp.</name>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
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        <curCd>USD</curCd>
        <valUSD>260327.50000000</valUSD>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2026-05-15</maturityDt>
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      <invstOrSec>
        <name>Puerto Rico Highway &amp; Transportation Authority</name>
        <lei>549300J6QBXVWJXB7Y41</lei>
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          <isin value="US745190UP15"/>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
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        <invCountry>PR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2035-07-01</maturityDt>
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          <annualizedRt>5.25000000</annualizedRt>
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      <invstOrSec>
        <name>California Municipal Finance Authority</name>
        <lei>5493000UQOV6R4ZWS346</lei>
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          <isin value="US13049YCT64"/>
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        <curCd>USD</curCd>
        <valUSD>756247.80000000</valUSD>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2051-05-15</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Michigan Finance Authority</name>
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          <isin value="US59447PD328"/>
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        <curCd>USD</curCd>
        <valUSD>39232.90000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Metropolitan Transportation Authority</name>
        <lei>5493000TKYODLXADQD60</lei>
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        <cusip>59261AA49</cusip>
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          <isin value="US59261AA495"/>
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        <balance>265000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>278462.00000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2022-09-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Morgan State University</name>
        <lei>N/A</lei>
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        <cusip>61744QEB7</cusip>
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          <isin value="US61744QEB77"/>
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        <balance>440000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>475692.80000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2032-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Buckeye Tobacco Settlement Financing Authority</name>
        <lei>N/A</lei>
        <title>Buckeye Tobacco Settlement Financing Authority</title>
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          <isin value="US118217DA38"/>
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        <balance>1400000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>194348.00000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2057-06-01</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Buckeye Tobacco Settlement Financing Authority</name>
        <lei>N/A</lei>
        <title>Buckeye Tobacco Settlement Financing Authority</title>
        <cusip>118217CS5</cusip>
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          <isin value="US118217CS54"/>
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        <balance>75000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>95472.00000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2036-06-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Puerto Rico Industrial Tourist Educational Medical &amp; Environmental Control Facilities Financing Authority</name>
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        <cusip>74527JAD9</cusip>
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        <curCd>USD</curCd>
        <valUSD>251125.00000000</valUSD>
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        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2022-06-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>9.12000000</annualizedRt>
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        <name>Puerto Rico Highway &amp; Transportation Authority</name>
        <lei>549300J6QBXVWJXB7Y41</lei>
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          <isin value="US745190HF89"/>
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        <assetCat>DBT</assetCat>
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        <invCountry>PR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2020-07-01</maturityDt>
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          <annualizedRt>5.50000000</annualizedRt>
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        <name>County of Prince George's MD</name>
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        <assetCat>DBT</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2037-10-01</maturityDt>
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          <annualizedRt>5.00000000</annualizedRt>
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          <isCashCollateral>N</isCashCollateral>
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        <name>Puerto Rico Electric Power Authority</name>
        <lei>5493003BRB67HF8ST418</lei>
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        <balance>20000.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>13950.00000000</valUSD>
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        <assetCat>DBT</assetCat>
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        <invCountry>PR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
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          <maturityDt>2025-07-01</maturityDt>
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          <annualizedRt>5.25000000</annualizedRt>
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      <invstOrSec>
        <name>Puerto Rico Sales Tax Financing Corp.</name>
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          <maturityDt>2027-07-01</maturityDt>
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        <name>Travis County Health Facilities Development Corp.</name>
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          <annualizedRt>7.00000000</annualizedRt>
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        <name>Sales Tax Securitization Corp.</name>
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          <isin value="US79467BDA08"/>
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          <maturityDt>2040-01-01</maturityDt>
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        <name>MFS Institutional Money Market Portfolio</name>
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        <issuerCat>RF</issuerCat>
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        <fairValLevel>1</fairValLevel>
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        <name>Tennessee Energy Acquisition Corp.</name>
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        <balance>100000.00000000</balance>
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        <invCountry>US</invCountry>
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        <name>Puerto Rico Electric Power Authority</name>
        <lei>5493003BRB67HF8ST418</lei>
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        <balance>20000.00000000</balance>
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        <name>Sales Tax Securitization Corp.</name>
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        <name>Buckeye Tobacco Settlement Financing Authority</name>
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        <name>Puerto Rico Industrial Tourist Educational Medical &amp; Environmental Control Facilities Financing Authority</name>
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        <name>Chattanooga Health Educational &amp; Housing Facility Board</name>
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        <name>Sales Tax Securitization Corp.</name>
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        <name>Puerto Rico Electric Power Authority</name>
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          <isin value="US74526QX490"/>
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        <invCountry>US</invCountry>
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          <annualizedRt>5.00000000</annualizedRt>
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        <name>Puerto Rico Electric Power Authority</name>
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          <isin value="US74526QPS56"/>
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        <fairValLevel>2</fairValLevel>
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        <fairValLevel>2</fairValLevel>
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        <name>Puerto Rico Electric Power Authority</name>
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        <name>Puerto Rico Public Buildings Authority</name>
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        <name>County of Montgomery MD</name>
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        <name>Puerto Rico Sales Tax Financing Corp.</name>
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        <invCountry>PR</invCountry>

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        <fairValLevel>2</fairValLevel>
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          <maturityDt>2033-07-01</maturityDt>
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        <name>Travis County Health Facilities Development Corp.</name>
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        <name>Maryland Stadium Authority</name>
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        <name>Puerto Rico Electric Power Authority</name>
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        <name>Iowa Student Loan Liquidity Corp.</name>
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        <name>Washington Metropolitan Area Transit Authority</name>
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        <name>Colorado Health Facilities Authority</name>
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          <isin value="US19648FKA11"/>
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        <balance>55000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>59268.55000000</valUSD>
        <pctVal>0.055330408532</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-08-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Puerto Rico Electric Power Authority</name>
        <lei>5493003BRB67HF8ST418</lei>
        <title>Puerto Rico Electric Power Authority</title>
        <cusip>74526QU75</cusip>
        <identifiers>
          <isin value="US74526QU751"/>
        </identifiers>
        <balance>125000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>86875.00000000</valUSD>
        <pctVal>0.081102528090</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>PR</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>Y</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Sales Tax Securitization Corp.</name>
        <lei>N/A</lei>
        <title>Sales Tax Securitization Corp.</title>
        <cusip>79467BCX1</cusip>
        <identifiers>
          <isin value="US79467BCX10"/>
        </identifiers>
        <balance>50000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>60085.50000000</valUSD>
        <pctVal>0.056093075701</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>City of Valparaiso IN</name>
        <lei>N/A</lei>
        <title>City of Valparaiso</title>
        <cusip>92028RAC9</cusip>
        <identifiers>
          <isin value="US92028RAC97"/>
        </identifiers>
        <balance>100000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>106905.00000000</valUSD>
        <pctVal>0.099801620322</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>7.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Metropolitan Transportation Authority</name>
        <lei>5493000TKYODLXADQD60</lei>
        <title>Metropolitan Transportation Authority</title>
        <cusip>59261AA98</cusip>
        <identifiers>
          <isin value="US59261AA982"/>
        </identifiers>
        <balance>155000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>155272.80000000</valUSD>
        <pctVal>0.144955587034</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2020-09-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
        <title>Maryland Health &amp; Higher Educational Facilities Authority</title>
        <cusip>5742182G7</cusip>
        <identifiers>
          <isin value="US5742182G77"/>
        </identifiers>
        <balance>500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>563895.00000000</valUSD>
        <pctVal>0.526426590820</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2044-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
        <title>Maryland Health &amp; Higher Educational Facilities Authority</title>
        <cusip>5742178R9</cusip>
        <identifiers>
          <isin value="US5742178R96"/>
        </identifiers>
        <balance>750000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>771315.00000000</valUSD>
        <pctVal>0.720064419614</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2041-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>6.25000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Maryland Health &amp; Higher Educational Facilities Authority</name>
        <lei>N/A</lei>
        <title>Maryland Health &amp; Higher Educational Facilities Authority</title>
        <cusip>574218HH9</cusip>
        <identifiers>
          <isin value="US574218HH97"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1089530.00000000</valUSD>
        <pctVal>1.017135394880</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2037-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Montgomery County Housing Opportunites Commission</name>
        <lei>549300HDL0LLRHMDL092</lei>
        <title>Montgomery County Housing Opportunites Commission</title>
        <cusip>613353AV3</cusip>
        <identifiers>
          <isin value="US613353AV30"/>
        </identifiers>
        <balance>550000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>610505.50000000</valUSD>
        <pctVal>0.569940022596</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2049-07-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>4.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>County of Prince George's MD</name>
        <lei>549300NSQ1W50I0VU811</lei>
        <title>County of Prince George's</title>
        <cusip>7417016L5</cusip>
        <identifiers>
          <isin value="US7417016L53"/>
        </identifiers>
        <balance>1000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1293110.00000000</valUSD>
        <pctVal>1.207188375239</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2033-07-15</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>County of Washington MD</name>
        <lei>N/A</lei>
        <title>County of Washington</title>
        <cusip>937752AR4</cusip>
        <identifiers>
          <isin value="US937752AR44"/>
        </identifiers>
        <balance>575000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>644839.50000000</valUSD>
        <pctVal>0.601992675251</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>MUN</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2032-01-01</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>5.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="All applicable monthly total returns are reported excluding any sales loads or redemption fees for Item B.5." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2020-07-30</ncom:dateSigned>
      <ncom:nameOfApplicant>MFS Municipal Series Trust</ncom:nameOfApplicant>
      <ncom:signature>Kasey Phillips</ncom:signature>
      <ncom:signerName>Kasey Phillips</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
