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