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8 2 6 3 10. ( 9 )
1 8 9 2 7 2 4 8 3 4 1 1 2 2 7 2 4 4 6 1 10 3 8 9 2 6 2 4 .
• 8 6 9: 7 5 1 7 ( 3, 2, 4)