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