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