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