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