Okay, fine, I gave up on doing this with paper. So programmer friends, if you’re looking for a dorky little thing to make that might make things easier for other people who like making word puzzles and silly games, I would appreciate this:
What I would like, as silly as this sounds, is a little program that can be given a list of possible letters (in this case, the alphabet), and then check it against a field of text. Basically, I want something that can tell me how close a sentence is to being a pangram, and show me what more I need.