ARRRRRRRRGH! I HAVE a guide with all the maps from TLoZ, bt I lost it! Grrrrrr...
I'm pretty sure there was an "E", an "L", and a "C". I can't think of any more of the levels, though I DO remember a spiral. That, and 8 and 9 didn't make letters.
Is it the word "Cel" by any chance? XD
(No, I doubt that's it. There HAS to be more than three.)
Everyone has their own opinions, no matter how WRONG they are.