That's a really good idea. I've been writing out all the different characters I can find, seeing how many there are because that might give us a clue to what kind of base language we're dealing with.

[It's taking a long time, though, going through the book and checking these things one at a time.]

I guess a good way to find articles might be to look for words that are capitalised but not the start of a sentence, the word before it is most likely to be an article, right?