title: VIM: swap two columns separated by space
body: <p>I have two columns:</p>
  
  <pre><code>cats dog  
  dog cats
  </code></pre>
  
  <p>I want to swap the two columns:</p>
  
  <pre><code>dog cats
  cats dog 
  </code></pre>
  
  <p>Using vim how would i do this?</p>