0    0    0    0
  1 1000    0    0
  2 1000 1000    0
  3 1000  666  666
  4    0  666    0
  5  666  666    0
  6    0  666  666
  7  666    0  666
  8  666  666  666
  9 1000 1000    0
 10  333  666 1000
 11    0  666 1000
 12  333  666    0
 13  333  333  333
 14  666  666  666
 15 1000 1000 1000