title: Algorithm for finding characters in the same positions in a list of strings?
body: <p>Suppose I have:</p>
  
  <ol>
  <li>Toby</li>
  <li>Tiny</li>
  <li>Tory</li>
  <li>Tily</li>
  </ol>
  
  <p>Is there an algorithm that can easily create a list of common characters in the same positions in all these strings?  (in this case the common characters are 'T' at position 0 and 'y' at position 3)</p>
  
  <p>I tried looking at some of the algorithms used for DNA sequence matching but it seems most of them are just used for finding common substrings regardless of their positions.</p>