by "changing one letter", Im assuming you can change "the non-existant letter place holder" to a letter. In short, make words other than 4 letters.
You shouldn't judge a book by it's cover, instead, you should read every single book to see what every book is about before you even come close to judging its viability.
You got rid of them. Yes, that's just like you. Getting rid of everything unpleasant instead of learning to put up with it. — Aldous Huxley, Brave New World
