(??84674 ??/a> ? ?
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? 6-12 ??(43 - 48 c??? 1-2 ?(48 - 53 ) 2-3 ?(53 - 58 ) 3-5 ?(58 - 63 ) 5-7 ?(63 - 68 ) 7-9 ?(68 - 73 )
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