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opg 12 c (1 (0 (0, 1, 2), 1 (0, 2, 4), 2, 3, 4, 5), 2 (0, 1, 2, 3, 4, 5))
opg 12 c
1
0
0
1
2
1
0
2
4
2
3
4
5
2
0
1
2
3
4
5