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word
4.1 : 4 27
26 : 1000 1900 1900
0400
4.2 2 29
28
4.3
/ / /
, 5 ; 0.5 .
4.4
200/ ; 100/ ;
0 .
4.5 10
20 ; 10 1 , 50 , 1 ,
. 1 / 1 ,
10 / .
4.6 / / /