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

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

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

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

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