And just in case the wording "special forms" makes someone think these are edge cases or just fancy-but-non-essential ligature type stuff, these are basic core syllables and sounds in these languages that go from their familiar form to a form where you have to mentally do some detective work to figure out what's being said. 1t'5 1!k3 !f 3v3ry 0th3r w0r<| w@5 wr!tt3n l!k3 th!5. (Not a great analogy but it's the best I got.)