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

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

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

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

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