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Ú°½Œã”¼3F-39.1(¸×½•½‹Ï39.1)
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1º:(*1,4)(2,5)9,6(7,11,10)(14,12,15)8,13=3
2º:1,4,5,2,9(6,14)(7,10)(11,12)(8,15)13=3
3º:(*1,4)(2,9,5)14(7,11,6)13,8(10,12)15-3
4º:(1,*4)(9,5)2(11,6)(7,8,14)13-12(10,3,15)
1’…”n / 2’…”n / 3’…”n