title: Find 3 letter words
body: <p>I have the following code in Python:</p>
  
  <pre><code>import re
  string = "what are you doing you i just said hello guys"
  regexValue = re.compile(r'(\s\w\w\w\s)')
  mo = regexValue.findall(string)
  </code></pre>
  
  <p>My goal is to find any 3 letter word, but for some reason I seem to only be getting the "are" and not the "you" in my list. I figured this might be because the space between the two overlap, and since the space is already used it cannot be a part of "you". So, how should I find only three letter words from a string like this?</p>