3
1 2 3-L 3-R 4 5 6 7 8 9 10-R 10-L 11-L 11-R 12-R 13-R 13-L 12-L A
1
2
3-L3-R
4
5
6
7
8
9
10-R
10-L
11-L11-R
12-R
13-R 13-L
12-L
A
1
2
3
4-L
5-L
4-R
5-R
6
7-R 7-L8-R 8-L
9-R 9-L
10
11-R 11-L
12
13 14
1516
B
1
2
3 4
5
6
7-L
7-R8-R
8-L
9-L
9-R
10-L10-R
C
