3    11     7     7
  0  0  1  0  0  0  0
  0  0  0  1  0  0  0
  0  1  1 10  0  0  0
 10  1  1  0  0  0  0
  0  0  0  0  0  0  1
  8  1  1  8  1  1  7
  0  9  9  0 10  0 10