title: How to create a list from another list in python
body: <p>I am very new to python and i was stuck with this. I need to create a list of lists that is
  formed from this list <code>c</code>: <code>['asdf','bbnm','rtyu','qwer']</code>.</p>
  
  <p>I need to create something like this:</p>
  
  <p><code>b</code>: <code>[['a','s','d','f'],['b','b','n','m'],['r','t','y','u'],['q','w','e','r']]</code></p>
  
  <p>I tried using a <code>for</code>-loop, but it is not working out. I don't know what mistake I am making.</p>