Okay, the user wants me to translate "trouble sleeping" into Russian. Let me check the rules again. The first rule says to translate all content into Russian. The second rule states that if the content is already in Russian, leave it as is. The third rule is to provide only the translation without any explanations.
So, "trouble sleeping" is in English. I need to translate it. The direct translation would be "проблемы со сном". Let me confirm that. "Trouble" can be "проблемы" or "беда", but "проблемы" is more commonly used for issues like sleeping. "Sleeping" is "сном" in the instrumental case here. So "проблемы со сном" sounds correct. I don't think the user provided any Russian text here, so no need to leave it unchanged. Just output the translation. No explanations, just the result. Alright, that should do it.
проблемы со сном
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