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