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opg 12 e (1 (4 (2 (3), 3 (2)), 3 (2 (4), 4 (2)), 2 (3 (4), 4 (3))), 2 (1…
opg 12 e
1
4
2
3
3
2
3
2
4
4
2
2
3
4
4
3
2
1
3
4
4
3
3
1
4
4
1
4
1
3
3
1
2
4
4
1
2
3