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, .
- — , 10 10-12 ° .
, . , 2-3 . .
, 3-4 10 , .
, 10-12 25 ( ) 40-45 ( );
- , 45-50 , 25 , — 8-10 ;
30×25-30 , 3-4 .
, . — 4-5 , — 3-4 .
, , .
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