7 9
 1    1    1   -1   -1   -1    0    0    0 
 1    1    1    0    0    0   -1   -1   -1 
 0    1    1   -1    0    0   -1    0    0 
 1    0    1    0   -1    0    0   -1    0 
 1    1    0    0    0   -1    0    0   -1 
 0    1    1    0   -1    0    0    0   -1 
 1    1    0    0   -1    0   -1    0    0 
