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