12
  0   0   0   0   0   0   0   0   0   0   0   0
  0   0   0   0   0   0   0   0   0   0   0   0
  0   0   0   1   0   0   0   0   0   0   0   0
  0   0   1   1   1   0   0   0   0   0   0   0
  0   1   1   2   1   1   0   0   0   0   0   0
  0   0   1   1   1   0   5   5   5   0   0   0
  0   0   0   1   0   0   0   0   0   0   0   0
  0   0   0   0   0   5   0   0   1   0   0   0
  0   0   0   0   5   0   0   1   2   1   0   0
  0   0   0   5   0   0   1   2  15   2   1   0
  0   0   5   0   0   0   0   1   2   1   0   0
  0   0   0   0   0   0   0   0   1   0   0   0