4
  3
717
010
   1   2   0
   0   0   1
  3
727
000
   1   2   0
   0   0   1
  4
2171
1100
   1  -1   0   1
   0   1   1   1
  4
2173
1101
   1  -1   0   1
   0   1   1   1