code: def _process_marked_candidate_indexes(candidate, markers):
      
      match = RE_SIGNATURE_CANDIDATE.match(markers[::-1])
      return candidate[-match.end('candidate'):] if match else []
docs: Run regexes against candidate's marked indexes to strip
      signature candidate.
  
      >>> _process_marked_candidate_indexes([9, 12, 14, 15, 17], 'clddc')
      [15, 17]