Compact 3×4 Piston Letters (Uppercase + Lowercase + Diagonals!)

I made the alphabet using piston letters, for both uppercase and lowercase. I included some possible variations are on the top. Some letters can be a bit questionable though … You can also turn each letter into a diagonal design, as I showed for a few letters.

Note 1: you could use trapdoors instead of pistons for more depth

Note 2: some lowercase letters (like g, q, and y) look good if you drop them down a block

Note 3; since pistons are movable, I guess you could make a moving display using a feed tape