00x101010010101 accept
00x0101010101 reject
01x11111011111 accept
01x11100000 reject
10x1110111111 accept
10x0000111111 reject
11x10101011100 accept
11x1010101000101 reject
00x00000x reject
00xx0000 reject
00000 reject
11x11x110 reject
