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