b a b a a b x1 b b a b a b x1 b a b b x1 b b a a b a b x1 2.2 b a b b x1 b a a b a b x1 b a b a a b x1 b a b x1 b a b a a b x1 b a b a b x1 b a b b x1 b a b x1 b a b b x1 b b a a b a b x1 b a b a a b x1 b b a b a b x1 true b a b a a b x1 b b a b a b x1 b a b b x1 b a b x1 b a b a a b x1 b a b x1 b a b a a b x1 b a b a b x1 true a 1 8857 b 1 8856 b 1 1 0 b a b a a b x1 b a b a b x1 b a b a a b x1 b a b x1 b a b b x1 b a b x1 b a b a a b x1 b b a b a b x1 b a b b x1 b b a a b a b x1 b a b a a b x1 b a b x1 b a b a a b x1 b a b a b x1 b a b b x1 b a b x1 true Failed! NaTT certifiable-1.6