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