7 8
   0    2    0    0    0    1    0  -19 
   0    0    1    0    0  -12   -1 1760 
   0    0    0    2    0    1    0   -6 
   0    0    0    0    1  -12   -1 1582 
   1    0    0    0    0   12    1 -1760 
   1    0    0    0    0   -1    0    6 
   1    0    0    0    0    0    0    1 

0 4
