> 1-2-3
> 1-3-2
> 3-1-2
> 1-3-4-2
> 1-4-2-3
> 1-2-4-3
> 1-4-3-2
> 1-2-4-5-3
> 1-3-5-4-2
> 1-3-2-5-4
> 1-5-3-6-2-4
> 1-6-3-5-2-4
> 1-4-2-5-3-6
> 1-3-6-2-4-5
> 1-4-2-6-3-5
> 1-6-4-2-5-3
> 1-4-6-3-5-2
> 1-5-4-8-6-3-7-2
> 1-5-4-2-6-3-7-8
> 1-3-7-2-6-5-4-8
> 1-8-4-3-6-5-7-2
> 1-8-7-2-6-5-4-3
> 1-6-2-5-8-3-7-4
> 1-10-5-3-6-4-9-7-2-8
> 1-5-10-7-3-4-6-2-8-9
> 1-8-4-6-2-5-10-7-9-3
> 1-3-9-4-6-5-8-10-2-7
> 1-4-9-7-10-2-8-6-5-3
> 1-9-4-3-5-7-8-10-2-6
> 1-10-5-7-3-11-6-9-2-12-4-8
> 1-9-2-7-4-8-6-10-5-12-3-11
> 1-3-11-9-12-4-6-2-5-10-7-8