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

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

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

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

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