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

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

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

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

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