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

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

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

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

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