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

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

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

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

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