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

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

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

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

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