text: # repeating strings
  s = "?"
  
  for i in range(4):
      print(s, end="")
  print()
  
  print(s * 4)
  
  # looping strings
  text = "This is an example."
  
  count = 0
  for char in text:
      # isalpha() returns true if the character is a-z
      if char.isalpha():
          count += 1