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