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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Example of Nested lists</title> </head> <body> <h1>Nested Lists</h1> <ul> <li>Category 1</li> <li>Category 2 <ul> <li>Child Category 1</li> <li>Child Category 2</li> <li>Child Category 3</li> <li>Child Category 4</li> </ul> </li> <li>Category 3</li> <li>Category 4 <ul> <li>Child Category 1</li> <li>Child Category 2</li> <li>Child Category 3</li> <li>Child Category 4</li> </ul> </li> </ul> </body> </html>