3    13     8     8
  0  1  0  0  0  0  0  0
 12  0  0  0  0  0  0  0
  0  0  0  1  0  0  0  0
  0  0 12  0  0  0  0  0
  0  0  0  0  0  1  0  0
  0  0  0  0 12  0  0  0
  6  5  2  1  5 10 12  7
  9 11  6 11  4 10  9  1