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