# BLT 9 3
0 1 0 0 0 
0 0 1 0 0 
0 1 7 2 7 
0 1 3 7 4 
0 1 5 4 3 
1 1 3 8 1 
1 4 7 5 1 
1 1 3 3 6 
1 4 7 3 8 
1 7 2 7 4 

