Most elegant way to generate 3-char sequence

[Petr Jakes]

sam wrote:
> I have found that the more elegant the code is, the harder it is for me
> to understand what it is trying to accomplish. It is my opinion that
> "Keep It Simple" wins over elegance. When I have had the urge to get
> elegant, I make sure I comment the elegance so my less elegant
> co-workers can figure out what I was trying to accomplish.
> 
> Sam Schulenburg
+1

Petr Jakes