text: #!/usr/bin/env python3
  
  from credit_card import CreditCard
  import sys
  
  
  def main(av):
      if len(av) != 2:
          print("USAGE: " + av[0] + " card_number")
      else:
          card = CreditCard(av[1])
          for possibility in card.get_all_possibilities():
              print(possibility)
  
  
  if __name__ == '__main__':
      exit(main(sys.argv))
  