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

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

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

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

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