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