input: def convert_list_to_dict(items: list) -> dict:
      """
      Convert a given list of numeric items into a dictionary where each item becomes
      a key, and its corresponding value is a string representation of the item number.
      For example, the input [1, 2, 3, 4] should be converted to 
      {1: 'one', 2: 'two', 3: 'three', 4: 'four'}.
      
      >>> convert_list_to_dict([1, 2, 3, 4])
      {1: 'one', 2: 'two', 3: 'three', 4: 'four'}
      >>> convert_list_to_dict([5, 6, 7, 8])
      {5: 'five', 6: 'six', 7: 'seven', 8: 'eight'}
      """
output:     number_to_word = {
          1: 'one', 2: 'two', 3: 'three', 4: 'four',
          5: 'five', 6: 'six', 7: 'seven', 8: 'eight',
          9: 'nine', 10: 'ten', 11: 'eleven', 12: 'twelve',
          13: 'thirteen', 14: 'fourteen', 15: 'fifteen', 16: 'sixteen',
          17: 'seventeen', 18: 'eighteen', 19: 'nineteen', 20: 'twenty'
      }
      
      result = {}
      for item in items:
          if item in number_to_word:
              result[item] = number_to_word[item]
      
      return result