new_contents: # What is the probability of one specific person to have the same pin digits with the person next to him?
  # Assume that the pin is four digits
  
  # Generating a specific one
  
  pins = ['{0:04}'.format(i) for i in range(0, 10000)]
   
  counter1, counter2, counter3, counter4 = 0, 0, 0, 0
  for p in pins:
      p = set(p)
      if len(p) == 1:
          counter1 += 1
      elif len(p) == 2:
          counter2 += 1
      elif len(p) == 3:
          counter3 += 1
      elif len(p) == 4:
          counter4 += 1
   
  print(counter1, counter2, counter3, counter4)
  
subject: add specific