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1º:(*8,12)(1,3,15)(5,10)(2,14)(4,11)-(6,9)13-7
2º:(*8,12)(1,3,15)(5,10)(2,14)4-(6,11)(9,13)-7
3º:(*8,12)-1(5,15,3,13)14,10(2,4,11)(6,9)7
4º:(*8,12)(1,5)15(14,13)=(2,3,4)(7,11)(6,10)9
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