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

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

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

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

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