. , ().
. 30 30 , : 3210123 .
. , .
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: , , , . , , , , ; , , , ( ), ; , , .
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11 12. 13. 14. 15. 16. 17. 18. 19 20 21 22. 23. 24. 25. 26. 27. 2. 29. 30. | 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 3 2 1 0 1 2 3 |
. 10 () :
1, 2, 7, 8, 13, 14, 19, 20, 25, 26
3, 4, 9, 10, 15, 16, 21, 22, 27, 28
5, 6, 11, 12, 17, 18, 23, 24, 29, 30
. : 3210123 7654321, ─ 1234567, ─ 7654321. .