I have made the "would of" mistake but it isn't because I don't know that "would've" is the correct spelling but because they sound identical. So, I type sounds that I'm thinking. English has always been one of my worst subjects. My grammar is bad but my spelling is worse. The rules for spelling seem weird to me. I think there should be a letter for every sound. It would make the alphabet much bigger but once you know it you would know how to spell every word including words you haven't read yet because all you would have to do is put the sounds in order. That would make the rules simple. You would just memorize the sounds and put them in order.