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