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