f1 = 1 + x4 + x4 x5 + x3 x5 + x2 x4 x5 + x2 x3 + x2 x3 x4 + x1 x5 + x1 x4 x5 + x1 x3 + x1 x3 x5 + x1 x3 x4 + x1 x2 x3 f2 = x5 + x3 x4 + x3 x4 x5 + x2 x4 + x2 x4 x5 + x2 x3 x4 + x1 + x1 x5 + x1 x4 + x1 x3 + x1 x2 + x1 x2 x4 + x1 x2 x3 f3 = 1 + x5 + x4 x5 + x3 + x3 x4 x5 + x2 x5 + x2 x4 x5 + x2 x3 + x2 x3 x5 + x2 x3 x4 + x1 + x1 x5 + x1 x3 x5 + x1 x3 x4 + x1 x2 + x1 x2 x5 + x1 x2 x4 + x1 x2 x3 f4 = x5 + x4 + x4 x5 + x3 + x3 x4 + x2 + x2 x5 + x1 + x1 x5 + x1 x4 x5 + x1 x3 + x1 x3 x5 + x1 x2 + x1 x2 x3 f5 = x4 +x3 +x3 x5 +x2 x4 x5 +x2 x3 +x2 x3 x5 +x1 +x1 x4 +x1 x3 x5 +x1 x2 x4 + x1 x2 x3

1