1. 0,2,4,1,6,0,0
  2. 2,0,0,0,5,0,0
  3. 4,0,0,0,5,5,0
  4. 1,0,0,0,1,1,0
  5. 6,5,0,1,0,5,5
  6. 0,0,5,1,5,0,0
  7. 0,0,0,0,5,0,0