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

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

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

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

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