text: animals = [
          ("fly", "I don't know why she swallowed a fly, perhaps she'll die."),
          ("spider", "It wiggled and jiggled and tickled inside her."),
          ("bird", "How absurd, to swallow a bird."),
          ("cat", "Imagine that, she swallowed a cat."),
          ("dog", "What a hog, to swallow a dog."),
          ("goat", "She just opened her throat and swallowed a goat."),
          ("cow", "I don't know how she swallowed a cow."),
          ("horse", "She's dead, of course.")]
  
  for i, (animal, lyric) in enumerate(animals):
      print "There was an old lady who swallowed a {}.\n{}".format(animal, lyric)
  
      if animal == "horse": break
  
      for (predator, _), (prey, _) in zip(animals[i:0:-1], animals[i-1::-1]):
          print "\tShe swallowed the {} to catch the {}".format(predator, prey)
  
      if animal != "fly": print animals[0][1]  # fly lyric
      print  # new line
  