That's a problem that is at least possible for the LLM to perceive and learn through training, while counting letters is much more like asking a colour blind person to count flowers by colour.
Why is it not possible? Do you think it's impossible to count? Do you think it's imposing to learn the letters in each token? Do you think combining the two is not possible.
Why is it not possible? Do you think it's impossible to count? Do you think it's imposing to learn the letters in each token? Do you think combining the two is not possible.