f1 = 1 + x6 + x5 + x4 x5 + x3 + x2 x6 + x2 x4 + x2 x4 x5 + x2 x3 + x2 x3 x6 + x1 + x1 x5 x6 + x1 x4 x5 + x1 x4 x5 x6 + x1 x3 x5 x6 + x1 x2 x6 + x1 x2 x5 x6 + x1 x2 x4 x5 + x1 x2 x4 x5 x6 + x1 x2 x3 + x1 x2 x3 x6 f2 = 1 + x4 + x4 x5 x6 + x3 + x3 x6 + x3 x5 + x2 x6 + x2 x4 x5 + x2 x4 x5 x6 + x2 x3 x5 + x2 x3 x5 x6 + x1 + x1 x6 + x1 x5 x6 + x1 x4 x5 x6 + x1 x3 + x1 x3 x6 + x1 x3 x5 + x1 x3 x5 x6 + x1 x2 + x1 x2 x5 + x1 x2 x5 x6 + x1 x2 x4 x6 + x1 x2 x3 x6 + x1 x2 x3 x5 x6

1