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

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

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

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

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