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

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

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

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

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