(0 21 9 6 2)(1 10 5)(3 13 4)(7 12 8)(11 16 14)(15 19 17)(18 22 20)
ALLOWS (11/8)-SEQUENCE
1: (2 7 12)

(0 21 9 6 2 8 7)(1 10 5)(3 13 4)(11 16 14)(12)(15 19 17)(18 22 20)
2: (1 10 5)

(0 21 9 6 2 8 7)(1)(3 13 4)(5)(10)(11 16 14)(12)(15 19 17)(18 22 20)
3: (6 21 9)

(0 21 2 8 7)(1)(3 13 4)(5)(6)(9)(10)(11 16 14)(12)(15 19 17)(18 22 20)
4: (2 8 21)

(0 21 7)(1)(2)(3 13 4)(5)(6)(8)(9)(10)(11 16 14)(12)(15 19 17)(18 22 20)