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