input: Write a function that generates an autocomplete list by predicting words based on the input text. The function should return the top 5 predicted words ranked by their relevance.
  def autocomplete(input_text):
      # Generate the word candidates
      word_candidates = generate_candidates(input_text)
      # Filter the word candidates 
      filtered_words = filter_candidates(word_candidates)
      # Rank the words and return the top 5 
      sorted_words = rank_words(filtered_words)
      return sorted_words[:5]
  assert autocomplete("he")==["hello", "help", "heart", "heavy", "healthy"]
  assert autocomplete("pro")==["program", "process", "production", "professional", "project"]
  assert autocomplete("co")==["code", "computer", "company", "conversation", "context"]
  assert autocomplete("un")==["understand", "united", "university", "until", "under"]
  assert autocomplete("")==[]
output: def autocomplete(input_text):
      word_candidates = ["hello", "help", "heart", "heavy", "healthy", "program", "process", "production", "professional", "project", "code", "computer", "company", "conversation", "context", "understand", "united", "university", "until", "under"]
      filtered_words = [word for word in word_candidates if word.startswith(input_text)]
      sorted_words = sorted(filtered_words, key=lambda x: (-len(x), x))
      return sorted_words[:5]