The registration plate/leet speak game

You might not have an equivalent of this state-side, as I believe most of your vehicle registration plates are simply numbers - correct if I'm wrong though, please.

Over here in the UK, or licence plates are made up of a combination of letters and numbers. Currently, your standard UK plate consists of two letters followed by two numbers, a space, then three letters. For example -  SM06 TDK. The SM denotes that the car was purchased in Scotland, hence the S, in a town beginning with an M. The '06 denotes the car was purchased in 2006. The final 3 letters are, I believe, random in order to provide a healthy amount of random plates. Again, that could be wrong. But that's not the point.

I've developed a game I play when I'm out and about. To be honest, it's less of a game, and more of a compulsion. I can't help but read the first 4 characters of a licence and turn it inot a word, using a combination of the letters and numbers-in-leet-speak. SM06, again for example, becomes SMOG. EA53 becomes EASE.

It's a strange quirk, and one that shows no sign of going away.