When I was composing this question yesterday, I wanted to ask this:
Which words would you suggest me to use?
I wanted to do it using hortari and an ut-clause. I was looking for a question form of this statement:
You suggest that I use these words.
Me hortaris, ut his vocibus utar.
How to convert this into a question? I was unable to do so, so I worked around it, but I would still like to know.
Without the suggestion the conversion would be easy: his vobibus utor becomes quibus vocibus utor? ("which words do I use?"). But replacing the pronoun his with an interrogative sounds awfully fishy if it happens in a subordinate clause:
Me hortaris, ut quibus vocibus utar?
I could break the subordinate clause and bring quibus to a position where it sounds like an interrogative pronoun:
Quibus vocibus me hortaris, ut utar?
This does not sound perfect either, and it is prone to misinterpretation. The instrumental ablative quibus vocibus is supposed to modify utar, not hortaris.
Are there examples of questions like this in classical Latin? Perhaps an example of this exact structure does not exist, but hopefully something that would help composing this question by analogy. If such questions are nowhere to be found, I am prepared to conclude that there is no grammatical way to structure a question from my starting point. In that case I would like suggestions for asking my question in good classical Latin.