翻来覆去 (fān lái fù qù): Over and over again / Repeatedly (adverb/idiom) — Meaning & Stroke Order

The draft of this contract has been reviewed over and over again, no less than ten times, by lawyers from both sides.

I've thought about this problem over and over again, but still haven't found an answer.

He did not dwell on the details over and over again; instead, he made a decisive decision.

I searched the fridge over and over again last night but still couldn't find that bottle of yogurt.