<ul>

<li>3 largest countries by population</li>

<ol>

<li>China</li>

<ol>

<li>India</li>

<ol>

<li>Unated States</li>

<li>3 largest cities by population</li>

<ol>

<li>Tokyo</li>

<ol>

<li>Delhi</li>

<ol>

<li>Shanghai</li>

</ul>