(0 20 18)(1 19 17 15 5)(2 21 16 14 12)(3 7 6)(4 10 8)(9 13 11)
ALLOWS (11/8)-SEQUENCE
1: (0 2 18)
(0)(1 19 17 15 5)(2 20 18 21 16 14 12)(3 7 6)(4 10 8)(9 13 11)
2: (16 18 21)
(0)(1 19 17 15 5)(2 20 18 14 12)(3 7 6)(4 10 8)(9 13 11)(16)(21)
3: (15 19 17)
(0)(1 19 5)(2 20 18 14 12)(3 7 6)(4 10 8)(9 13 11)(15)(16)(17)(21)
4: (14 20 18)
(0)(1 19 5)(2 20 12)(3 7 6)(4 10 8)(9 13 11)(14)(15)(16)(17)(18)(21)