title: How to do this kind of windows movement in VIM?
body: <p>First I have three windows splited like this:</p>
  
  <pre><code>|    |    |    |
  |    |    |    |
  | A  | B  | C  |
  |    |    |    |
  |    |    |    |
  </code></pre>
  
  <p>So, how can I change them into this way?</p>
  
  <pre><code>         |      |
     A     |      |
  _________|  C   |
     B     |      |
           |      |
  </code></pre>
  
  <p>This happens when I want to use both TagList &amp; NERDTree. Both of them open a new window on the left side.</p>