title: Pairwise testing: How to create the table?
body: <p>Hello I have doubt regarding how to create the table for the pairwise testing.
  For example if I have three parameter which can each attain two different values. How do I create a table of input with all possible combination then? Would it look something like this?</p>
  
  <pre><code>    | 1 2 3
   -----------
    1 | 1 1 1
    2 | 1 2 2
    3 | 1 1 2
    4 | 1 2 1
  </code></pre>
  
  <p>Does each parameter corresponds to each column?
  However since I have 3 parameter, which each can take 2 different value. The number of test cases should be <code>2^3</code> isn't it?</p>