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

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

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

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

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