input: 
  def print_cubic_values(numbers: List[int]) -> None:
      """ Takes a list of numbers from 1 to 8 and prints its cubic values.
      >>> print_cubic_values([1, 2, 3, 4, 5, 6, 7, 8])
      1
      8
      27
      64
      125
      216
      343
      512
      """
  
output:     for num in numbers:
          print(num ** 3)