A B
B A
---
1 0 0 0 0 0 0 0 0 0 1
1 0 1 1 1 0 1 1 1 0 1 
1 0 1 1 1 0 1 1 1 0 1 
1 0 1 1 0 A 0 0 1 0 1
1 0 0 0 0 1 0 0 0 0 B
1 0 1 1 0 0 0 1 1 0 1 
1 0 1 1 1 0 1 1 1 0 1
1 0 1 1 1 0 0 1 1 0 1 
0 0 0 0 0 0 0 0 0 0 1
