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

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

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

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

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