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