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