title: How to exclude words from txt file?
body: <p>For example, i have text like this.</p>
  
  <blockquote>
    <p>blahblabhalha'important1'jiojif<br>
    blahblabhdsasalha'important2'jiojisdsdf<br>
    blahblabaaahalha'important3'jiosaajif</p>
  </blockquote>
  
  <p>After using a program I want to get important1important2important3</p>
  
  <p>Which program should I use?</p>