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