So this question (which actually isn't even a question)...
It seems the only purpose is to get someone to solve or validate a particular regular expression.
Feels much to me like doing somebody else's homework (no matter if that's the case or nor).
The user will never learn anything, if they post their very specific inquiries here without studying and learning anything from it (which to me seems to be the case).
So what's the recommended action in this case? Just let it be, until some kind soul actually decides to solve their specific problem?
I actually believe a good answer could be written to explain some of the aspects of regular expressions.
On the other hand, I wonder what could be written here about regular expressions that isn't already in the official documentation about the subject.
So frankly, I'm a bit at a loss here - both for the specific post, and also this particular user's post history taken into account.