FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME /MD/
NSAR-B, 2000-02-23
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<PAGE>      PAGE  1
000 B000000 12/31/1999
000 C000000 0000205355
000 D000000 N
000 E000000 NF
000 F000000 Y
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001 A000000 FIRST VARIABLE RATE FUND FOR GOVT INCOME
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002 A000000 4550 MONTGOMERY AVE., SUITE 1000N
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<PAGE>      PAGE  2
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
057  000200 N
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070 A010200 N
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070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
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070 I010200 N
070 I020200 N
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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SIGNATURE   WILLIAM M. TARTIKOFF
TITLE       GENERAL COUNSEL


WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 411
   <NAME> CALVERT FIRST GOVERNMENT MONEY MARKET FUND, CLASS O
<MULTIPLIER> 1000

<S>                             <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 422
   <NAME> CALVERT FIRST GOVERNMENT MONEY MARKET FUND, CLASS B
<MULTIPLIER> 1000

<S>                             <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 444
   <NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME, CLASS C
<MULTIPLIER> 1000

<S>                             <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 455
   <NAME> CALVERT FIRST GOVERNMENT MONEY MARKET FUND, CLASS I
<MULTIPLIER> 1000

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JUL-01-1999
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000205355
<NAME> FIRST VARIABLE RATE FUND FOR GOVERNMENT INCOME
<SERIES>
   <NUMBER> 477
   <NAME> CALVERT FIRST GOVERNMENT MONEY MARKET FUND, CLASS T
<MULTIPLIER> 1000

<S>                             <C>
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</TABLE>


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