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