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