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