code: def normalize_hamza(word):
      
      if word.startswith(ALEF_MADDA):
          if len(word) >= 3 and (word[1] not in HARAKAT) and \
                  (word[2] == SHADDA or len(word) == 3):
              word = HAMZA + ALEF + word[1:]
          else:
              word = HAMZA + HAMZA + word[1:]
      # convert all Hamza from into one form
      word = word.replace(ALEF_MADDA, HAMZA + HAMZA)
      word = HAMZAT_PATTERN.sub(HAMZA, word)
      return word
docs: Standardize the Hamzat into one form of hamza,
      replace Madda by hamza and alef.
      Replace the LamAlefs by simplified letters.
  
      @param word: arabic text.
      @type word: unicode.
      @return: return a converted text.
      @rtype: unicode.