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