6-7-6 1′-7 6-5
5-6-5 7-6 5-4
3-4-5-6-5 4-3-3 4-5
3-4-5-6-5 4-3

3′-2′-3′-2′ 3′-2′-1′-7
2′-1′-2′-1′ 3-2-1-7-6 (X2)

1′-7-1′-7 6-7-6-5-5
3-4-5-6 5-6-4-3-3 (X2)

6-7-6 1′-7 6-5
5-6-5 7-6 5-4
3-4-5-6-5 4-3-3 4-5
3-4-5-6-5 4-3