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