code: def slim_stem(token):
      
      target_sulfixs = ['ic', 'tic', 'e', 'ive', 'ing', 'ical', 'nal', 'al', 'ism', 'ion', 'ation', 'ar', 'sis', 'us', 'ment']
      for sulfix in sorted(target_sulfixs, key=len, reverse=True):
          if token.endswith(sulfix):
              token = token[0:-len(sulfix)]
              break
      if token.endswith('ll'):
          token = token[:-1]
      return token
docs: A very simple stemmer, for entity of GO stemming.
  
      >>> token = 'interaction'
      >>> slim_stem(token)
      'interact'