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