How to create ordered list containing unordered list?

Answer 1

<ol>
<li>
<ul><li></li></ul>
</li>
</ol>

Answer 2

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<ol>
<li>here is the first</li>
<li>here is the second</li>
<ul>
<li>subcategory one</li>
<li>subcategory two</li>
<li>subcategory three</li>
</ul>
<li>here is the third</li>
</ol>