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