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