Please read the posting guidelines in the sticky note at the beginning of this forum and provide as much of the requested information as possible. In particular, what is the regex variant you are using (they differ in their capabilities) and can we have a sample of the text you are scanning.

What you you define as a "string" that may or may not end in "-C" or "-L"? Given, say:

hi there-c friend

would this become " friend" or "hi  friend" or what?

Once we know this, we can create a pattern that matches such as "string" and then add '-[CL]\b' or '-(C|L)\b' or similar to it to make it match only those that end in the specified suffix. This can then be used in a regex "replace" operation.

Susan