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

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

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

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

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