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