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30 , , :
ü (1, 2, 7, 8, 13, 14, 19, 20, 25, 26);
ü (3, 4, 9, 10, 15, 16, 21, 22, 27, 28);
ü (5, 6, 11, 12, 17, 18, 23, 24, 29, 30).
, .
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1:
- 3 2 1 0 1 2 3