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