It cannot read. It doesn't see words or letters. It works with Tokens which words are converted into. It cant count the number of letters in a word because it can't see them. OpenAI has a Tokenizer you can plug a prompt into to see how its broken up, but youre asking a fish to fly.
Is there a workaround to "trick" it into understanding letters? I'd love to use it to play with language and brainstorm some riddles or other wordplay, but if it literally can't understand language on a human level, that's a fools errand.