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