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