input: 
  def autocomplete(input_text: str) -> List[str]:
      """Predicts words based on the input text using an autocomplete system. The system 
      generates word candidates, filters them, and ranks them to return the top 5 words.
      >>> autocomplete("app")
      ['apple', 'application', 'appreciate', 'appendix', 'appetite']
      >>> autocomplete("python")
      ['python', 'pythonic', 'python3', 'python2', 'pythons']
      """
  
output:     word_candidates = ["apple", "application", "appreciate", "appendix", "appetite", 
                         "python", "pythonic", "python3", "python2", "pythons", 
                         "java", "javascript", "jaguar", "jazz", "jungle"]
      
      filtered_words = [word for word in word_candidates if word.startswith(input_text)]
      
      sorted_words = sorted(filtered_words)
      
      return sorted_words[:5]