code: def command_u2a(string, vargs):
      
      try:
          l = ARPABETMapper().map_unicode_string(
              unicode_string=string,
              ignore=vargs["ignore"],
              single_char_parsing=vargs["single_char_parsing"],
              return_as_list=True
          )
          print(vargs["separator"].join(l))
      except ValueError as exc:
          print_error(str(exc))
docs: Print the ARPABEY ASCII string corresponding to the given Unicode IPA string. 
  
      :param str string: the string to act upon
      :param dict vargs: the command line arguments