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

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

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

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

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