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30
.
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50
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20
30
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50
30
50
.
= =
50
30
20
30
30
30
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30
50
50
20
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.
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, :
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.
. .
= =
:
50
50
30
20
50
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20
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1 . 1 . . 1 .
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30
10
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50
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= =
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= =
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1 . .
!
|
|
. 
