input: 
  def common_elements(list1: List[Any], list2: List[Any]) -> List[Any]: 
      """ Return a new list containing only the common elements between two input lists.
      >>> common_elements([1, 2, 3, 4, 8], [2, 6, 8, 10])
      [2, 8]
      >>> common_elements(['a', 'b', 'c'], ['b', 'c', 'd'])
      ['b', 'c']
      """
      common_list = []
      for element in list1: 
          if element in list2: 
              common_list.append(element) 
      return common_list
  
output:     common_list = []
      for element in list1: 
          if element in list2: 
              common_list.append(element) 
      return common_list