title: How to find strings in a file using MATLAB
body: <p>I have a file which contains repeating strings. File is very large so I give a simple example:</p>
  
  <pre><code>a    b    c
  w    a    g
  b    v    f
  </code></pre>
  
  <p>I want to extract <code>a b</code> to an array. How can I do this in MATLAB?</p>