M:
{6 15 :
1 1 1 1 1 0 0 0 0 0 0 0 0 0 0  
1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 
0 1 0 0 0 1 0 0 0 1 1 1 0 0 0 
0 0 1 0 0 0 1 0 0 1 0 0 1 1 0 
0 0 0 1 0 0 0 1 0 0 1 0 1 0 1 
0 0 0 0 1 0 0 0 1 0 0 1 0 1 1}