9 creatures of size 9:
  0a+1a+2b2c+2b+5c+4c+4b
  0c+5a+4b+2a+5b+4c+2b+5c
  0a+1a+2a+2b+3a+5b+4b----3c
  0a+1a+2c+3a+4b+5a+3c----3c
  0a+1a+2a+2a+5c+3b+5c----3c
  0a+1a+2c+4b+5c+3b+3c+5b
  0a+1a+2a+2a+4a+4b+5a----3c
  0a+1b+2c+4b+5a+3a+3c+5b
  0a+1a+2c+4b+5a+3a+3c+5b