(0 19 17)(1 20 13 9 3)(2 12 10 6 4)(5 8 7)(11 18 16)(14 21 15)
ALLOWS (11/8)-SEQUENCE
1: (0 1 17)
(0)(1 19 17 20 13 9 3)(2 12 10 6 4)(5 8 7)(11 18 16)(14 21 15)
2: (13 17 20)
(0)(1 19 17 9 3)(2 12 10 6 4)(5 8 7)(11 18 16)(13)(14 21 15)(20)
3: (11 18 16)
(0)(1 19 17 9 3)(2 12 10 6 4)(5 8 7)(11)(13)(14 21 15)(16)(18)(20)
4: (9 19 17)
(0)(1 19 3)(2 12 10 6 4)(5 8 7)(9)(11)(13)(14 21 15)(16)(17)(18)(20)