POSSIBLE 00000000000000000000 01111111111111111110 01111111111111111110 01111111111111111110 01111111111111111110 01111111111111111110 01111111111000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000 00000000000000000000