group reduction
0 38
0 10
0 10
0 28
0 6
0 8
0 33
0 8
1 19
1 36
1 16
1 36
1 38
1 28
1 36
1 22
1 42
1 24
1 40
1 34
1 6
1 16
1 30
2 12
2 16
2 0
2 -12
2 14
2 16
2 -10
2 4
2 -20
2 -6
2 18
2 16
2 -14
2 6
2 -16
2 6