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