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

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

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

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

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