0 0  21  -2  15 6
0 0  48  -2  16
 12 0 0  48  48
 49 0 0  47 0  -1
 17  24  -1  18
 27  17  17 0  18
 18 0  19  19  39
0 0  27  17  17 3
 18  18 3 0 0 9
