3    11     7     7
  0  0  1  0  0  0  0
  0  0  0  1  0  0  0
  1 10  0  1  0  0  0
  1  0 10  1  0  0  0
  0  0  0  0  0  0  1
 10  3  6  2  7  1  8
 10  0  0 10 10  0 10