User did not specify content for the HTML code, but requested strictly HTML code (h2/p/strong) without any markdown tags, introductions, or conclusions. Let's provide a generic or minimal clean HTML structure conforming to the prompt rules, or since no specific topic was provided, a simple placeholder structure using h2, p, and strong tags. Wait, let's look at the instruction: "Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python."
Since the user didn't give text, let's give a generic clean structure using those tags, e.g.:
Wait, let's make sure it's raw text, no markdown backticks (), because "sans balises markdown, sans code".
<h2>...</h2>
Wait, putting it in a markdown code block is using markdown tags, which the user explicitly forbade ("sans balises markdown"). So we must output only the raw HTML string directly as text.
Let's write:
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