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

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

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

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

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