Is it possible that Charons can have Charon marks everywhere on their body?

What I mean is like a charon mark in places we may not see or think of. Like Daphne could have a charon mark on her chest or something similar.

Why I ask is because it kinda makes sense that they could have them anywhere on their bodies or around their bodies. But I’m not completely sure yet, so I'm just asking for an opinion on that.