JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>one</li>
    <li>two</li>
    <li>three</li>
    <li>four</li>
</ul>

CSS

ul{padding:10px;}

JavaScript

$('li:nth-child(3), li:nth-child(4)').insertAfter('ul').wrapAll('<ul />')