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