[b, c]
0
0
2
0
2
1
[d, c]
0
0
2
1
3
2
[d, e]
3
2
3
2
[f, e]
4
3
3
2
[f, e]
4
3
4
2
[g, e]
0
0
4
2
5
4
[c, e, d]
6
0
5
0
4
0
[c, e]
6
0
5
0
0
0
[c, e]
12
0
10
0
0
0