title: split the lines which have words separated by more than one white space
body: <p>I am parsing some text files line by line, my need is to split the lines which have words separated by more than one white space. please suggest me how to do this</p>
  
  <p>sample text</p>
  
  <pre><code>John     is      working  in London
  </code></pre>
  
  <p>required output</p>
  
  <pre><code>John 
  is 
  working
  in London
  </code></pre>