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