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

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

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

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

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