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