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