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2. . , , . , . 10-15 . 10 . 3. . . . , . 10-15 . 10 . 4. . . , . . 10-15 5. . ,, -, .. 10-15 . 6. . . . . 10-15 . 7. . , , -, . 10-15 . 8. , , , . , , 9. ., , : - -. . .