(START) |- 1
1 a 2
1 a 3
2 b 2
3 b 3
2 c 4
3 c 5
4 d 4
5 d 5
4 -| (FINAL)
5 -| (FINAL)
1 b 6
1 c 6
1 d 6
2 a 6
2 d 6
3 a 6
3 d 6
4 a 6
4 b 6
4 c 6
5 a 6
5 b 6
5 c 6
6 a 6
6 b 6
6 c 6
6 d 6
