jQuery split long ul list to multiple UL

1. HTML code

<ul id="bigList">
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
<li>Elem</li>
</ul>
2. jQuery Code 
 var $bigList = $('#bigList'), group;
  while((group = $bigList.find('li:lt(20)').remove()).length){
    $('
    ').append(group).appendTo('body');
  }
Working Demo

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