title: Awk separate column output
body: <p>What I wanted to do is to create a Table (maximum=4 rows) from a one-column file using awk. 
  I have a file:</p>
  
  <pre><code>1 a,b
  2 r,i
  3 w
  4 r,t
  5 o,s
  6 y
  </code></pre>
  
  <p>The desire output: </p>
  
  <pre><code>1 a,b   5 o,s
  2 r,i   6 y
  3 w
  4 r,t
  </code></pre>
  
  <p>So far, I just separating the rows into different files and "paste" them into one. I would appreciate of any of more sophisticated method.  </p>