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