Sorry Bart. I read your original post in isolation of the full thread and hadn't realised that I was repeating what others had already said.

If you've seen my attempt at this at Re: Junk NOT words you'll have seen that my word list manages to match just about anything with one or two characters as a word. I decided to go through 1 & 2 char entries by hand and remove those that where nonsensical, but discovered to my surprise that many more of them are valid in some contexts than you might suppose.

For instance, 'x' - Outside of math or computing this doesn't seem like a valid word, but I ran across to uses in a scan of my correspondance that I have sent and recieved. The first in the phrase "X marks the spot" the second in a email from my sister signed "x. jj".

In other notes this became "xx. jj" and "xxx. jj". I guess I'm more loveable at sometimes than others. 'jj' are her first 2 initials BTW, so that meant that had to stay. Ah! 'BTW' there's another one. And so it went on. I found it extremely difficult to remove any of either the single chars or many of the digraphs as I could, without much effort, find (or think of) legitimate cases where they could crop up in 'normal' correspondance.

I wasn't jumping on the bandwagon with this, just reflecting my own, somewhat surprising discovery.