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