block trtmt A B C D count 
    1    1010 1 0 1 0  716
    1    1111 1 1 1 1  686
    1    0110 0 1 1 0  498
    1    0000 0 0 0 0 1437
    1    1100 1 1 0 0  527
    1    0101 0 1 0 1  579
    1    0011 0 0 1 1 1433
    1    1001 1 0 0 1  906
    2    0010 0 0 1 0 1024
    2    0001 0 0 0 1 1364
    2    0111 0 1 1 1  475
    2    1000 1 0 0 0  574
    2    1101 1 1 0 1  664
    2    0100 0 1 0 0  579
    2    1110 1 1 1 0  507
    2    1011 1 0 1 1 1130