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