3    49     7     7
  0  0  1  0  0  0  0
  0  0  0  1  0  0  0
  0  0  0  0  0  1  0
  0  6  6  6  0  0  0
  0  0  0  0  0  0  1
  1  0  5  0  0  2  0
  0  0  8  0  6  2  6