Note that Common Lisp doesn’t require functional programming. Mutation, side effects, etc. are fine. I just write imperative code for the most part. My code wa

Note that Common Lisp doesn’t require functional programming. Mutation, side effects, etc. are fine. I just write imperative code for the most part. My code was quick and dirty, so I don’t think anyone will learn anything from it, but it’s here: https://github.com/jaredkrinke/thirteen-letters https://github.com/jaredkrinke/thirteen-letters