title: What is the best way to generate all possible three letter strings?
body: <p>I am generating all possible three letters keywords <code>e.g. aaa, aab, aac.... zzy, zzz</code> below is my code:</p>
  
  <pre><code>alphabets = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
  
  keywords = []
  for alpha1 in alphabets:
      for alpha2 in alphabets:
          for alpha3 in alphabets:
              keywords.append(alpha1+alpha2+alpha3)
  </code></pre>
  
  <p>Can this functionality be achieved in a more sleek and efficient way?</p>