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1º:16-(8,6)1(4,12)(5,9)(10,11)(3,15)14-7=13 2
2º:16,8(1,6)(4,12)9,5,10(3,11)(14,15)7=13 2
3º:(16,*8)(1,6)(4,12)9(5,10)-(3,7,11)15,14=13 2
4º:(*16,8)6,1,4,9(5,12)(3,10,7)(14,11)15=13 2
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