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

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

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

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

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