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