title: Python: Pandas, Dataframe, Convert 1column data into 2D data format
body: <p>This is Pandas dataframe
  I want to convert 1D data into 2D array form </p>
  
  <p>How do I convert from </p>
  
  <pre><code>  'A'  'B'  'C'
  1  10   11   a  
  2  10   12   b
  3  10   13   c 
  4  20   11   d  
  5  20   12   e
  6  20   13   f
  
  to this 2d array as the following
  
     11 12 13
  10  a  b  c 
  20  d  e  f
  </code></pre>