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

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

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

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

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