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