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

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

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

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

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