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

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

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

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

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