how to number a list in html code example

Example 1: html ordered list

<ol>
  <lh>ol Header</lh>
  <li>Item One</li>
  <li>Item Two</li>
  <li>Item Thre</li>
</ol>

Example 2: html unordered list

<ul>
  <lh>ul Header</lh>
  <li>Item One</li>
  <li>Item Two</li>
  <li>Item Thre</li>
</ul>