(0 19 17)(1 20 15 11 3)(2 8 4)(5 21 6)(7 18 16 12 9)(10 14 13)
ALLOWS (11/8)-SEQUENCE
1: (0 1 17)

(0)(1 19 17 20 15 11 3)(2 8 4)(5 21 6)(7 18 16 12 9)(10 14 13)
2: (15 17 20)

(0)(1 19 17 11 3)(2 8 4)(5 21 6)(7 18 16 12 9)(10 14 13)(15)(20)
3: (12 18 16)

(0)(1 19 17 11 3)(2 8 4)(5 21 6)(7 18 9)(10 14 13)(12)(15)(16)(20)
4: (11 19 17)

(0)(1 19 3)(2 8 4)(5 21 6)(7 18 9)(10 14 13)(11)(12)(15)(16)(17)(20)