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

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

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

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

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