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

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

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

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

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