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