input: Write a function to modify the given Python program to use a dictionary instead of a list. The input is a list of numbers, and the output should be a dictionary where each key is a number from the input list and the value is a corresponding string representation of the number. The function should print the string values from the dictionary.
  
  
  def convert_list_to_dict(items):
      items = {1: 'one', 2: 'two', 3: 'three', 4: 'four'}
      for key, value in items.items():
          print(value)
  
  
  assert convert_list_to_dict([1, 2, 3, 4])==None
  assert convert_list_to_dict([3, 2, 1])==None
  assert convert_list_to_dict([4, 5, 6])==None
  assert convert_list_to_dict([])==None
  assert convert_list_to_dict([2, 4, 3, 2, 1])==None
output: def convert_list_to_dict(items):
      num_to_str = {1: 'one', 2: 'two', 3: 'three', 4: 'four'}
      result_dict = {item: num_to_str.get(item, 'unknown') for item in items}
      for value in result_dict.values():
          print(value)