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

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

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

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

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