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

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

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

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

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