title: I want to extract the strings from file name
body: <p>one_two_three_four_five.rtf</p>
  
  <p>I need five in A variable</p>
  
  <p>I need four in B variable</p>
  
  <p>And remaining in C variable</p>
  
  <p>Should read from the last character</p>
  
  <p>Note after 2 underscore from the last. There could be many underscores but should take has C variable.</p>
  
  <p>Is it possible?</p>