code: def last_char(word):
      """
      Return the last letter
      example: zerrouki; 'i' is the last.
      @param word: given word
      @type word: unicode
      @return: the last letter
      @rtype: unicode char
      """
      return word[-1:]
  
imports: import re
  from cltk.phonology.arb.utils.pyarabic import stack
label_desc: Use image node_id 29 for calling a global function with example usage: last_char(word) and returns: word