Good question. This is like a version of something where many other rules and exceptions from the past all come crashing together and you have to think of which one is the priority. I’ve removed a lot of my answer because I had creeping doubts about it and managed to get confused. It’d be great to get an authoritative answer. If one doesn’t appear after a few days, I’ll WhatsApp my Irish teacher and try to see what she says about this.
