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