The user did not provide the content or topic they want converted into the requested clean HTML format (<h2>, <p>, <strong>), but explicitly requested only the clean HTML code without any markdown, code blocks, introduction, or conclusion.
Since there is no content specified, I will provide a standard placeholder structure matching their exact formatting rules, or wait—rule 1 says: "If critical information is genuinely missing and the prompt cannot be reasonably answered without it, ask a brief clarifying question before generating a full solution." However, the user said "Retourne uniquement le code HTML propre... sans introduction, sans conclusion...".
Let's provide a generic or empty structure or ask? Wait, let's look at the instruction: "Retourne uniquement le code HTML propre (h2/p/strong)". Let's create a minimal generic block since they didn't specify the text, or a brief template.
Wait, let's look closer. Is there anything else? No. Let's provide a basic clean HTML snippet using those tags.
<h2>Titre Principal</h2>
<p>Ceci est un paragraphe d'exemple contenant du texte <strong>important</strong> pour illustrer le format demandé.</p>
Wait, the user said "sans balises markdown, sans code". That means no wrapper! Just raw HTML text.
Let's output raw HTML directly:
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暂无评论,来做第一个评论的人吧。