I am looking for a joining character that works a bit like overset
in LaTeX. It also works a bit like the many combining Unicode characters, but I would like it to work for any alphabetic letter. For example, I'd like to put a small capital A over an e.
Best I could find was this esoteric Unicode block called Combining Diacritical Marks Supplement, but that doesn't define every letter in the alphabet.
Is there no joining character which puts one symbol over the other?