10
3
2
* C C C C C B B B B
C C C C C B B B B B
C C C C B B B B B B
C C C C B B B B B B
C A A A A B B B B B
A A A A A A B B B B
A A A A A A A B B B
A A A A A A A A B B
A * A A A A A A A B
A A A A A A A A A B