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

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

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

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

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