For instance, if Jeolla people pronounce 냄세as 냄시, do they write it as 냄세 or 냄시??
Just curious

When I first saw the title, I thought of something altogether different:
I’m not sure if this is evident, but Koreans pronounce theirㅁ (m) sometimes asㅂ (b/p).
For instance, “맜있다” sometimes sounds like “MBashidda”. One common word is “뭐”. It often sounds like it is pronounced with a B rather than an M.
I don’t know how to express this… Anyone understands what I’m referring to or am I the only weirdo...?