input: Below is an instruction that describes a task. Write a response that appropriately completes the request.
  
  ### Instruction:
  Modify the provided Python program to use a set instead of a list and then convert it back to a list, sorted in ascending order.
  
  ### Input:
  items = [5, 2, 8, 1, 9]
  
  ### Output:
  items = [1, 2, 5, 8, 9]
  
  for item in items:
      print(item)
output:     
  items = list(sorted(set(items)))
  