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

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

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

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

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