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