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