2 2
4 4 4
0 0 0 1 
0 1 1 0
1 0 1 0
1 1 1 0
0 0 0 1 
0 1 1 0
1 0 1 0
1 1 1 0
0 0 0 1 
0 1 1 0
1 0 1 0
1 1 1 0
