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

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

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

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

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