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