I have learned that when we are using which if a word like in or for comes at the end of the which clause, we have to move those extra words to in front of the which like this:
The case for which the saint died was very religious.
What I am trying to ask is, does the same go with all the wh-words (what, when, who, how, etc.)?
There were some results with whom:
We have clients for whom we provide only one small service.
If yes, please provide me with some example sentences. If not, please explain why only which is used for that type of case. Also, I am sorry for misusing any grammatical term if there was any.