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