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

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

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

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

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