title: First and Follow Set of a given CFG
body: <p>I have this CFG and there is a loop in it then how to make first and follow set of looped cfg as first sets are easy but having problem in follow sets</p>
  
  <pre><code>S -&gt; iEtSS'|a
  S' -&gt; es
  E -&gt; b
  </code></pre>