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