MAYBE a b x b c x a c x c a x b b x a c x c b x b c x c b x c c x c c x c b x 0 1 2 x 2 0 1 x 2 2 2 2 2 2 2 1 1 1 1 2 x 2 1 2 2 0 1 2 1 1 0 1 0 x 2.1 ACP 0.72