B: 1 0 0 0 0 0 0 0;
B: 0 1 0 0 0 0 0 0;
B: 0 0 1 0 0 0 0 0;
B: 0 0 0 1 0 0 0 0;
B: 0 0 0 0 1 0 0 0;
B: 0 0 0 0 0 1 0 0;
B: 0 0 0 0 0 0 1 0;
B: 0 0 0 0 0 0 0 1;