title: multiple excel columns into a two column file
body: <p>I have an excel file with multiple columns in the following format:</p>
  
  <pre><code>name_1      name_2  name_3  
  name_1  name_4  name_5  name_6
  </code></pre>
  
  <p>This stands for name_1 cooperates with name_2 and name_3, name_2 cooperates with name_3, etc
  So I need to create a new excel file that will have all the cooperations, e.g</p>
  
  <pre><code>name_1  name_2
  name_1  name_3
  name_2  name_3
  name_1  name_4
  name_1  name_5
  name_1  name_6
  name_4  name_5
  name_4  name_6
  name_5  name_6
  </code></pre>
  
  <p>Is there any way to do this?</p>