input: Write a python function to find the first string longer than 10 characters from a list and return it.
  assert find_long_string(["cat", "doggo", "elephant", "giraffe"]) == "elephant"
  assert find_long_string(["short", "tiny", "miniscule", "adequatelylong"]) == "adequatelylong"
  assert find_long_string(["a", "bb", "ccc", "ddddddddddd"]) == "ddddddddddd"
output: def find_long_string(lst):
      for string in lst:
          if len(string) > 10:
              return string
      return None