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