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