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

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

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

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

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