input: Write a function named get_word_lists that takes a list of strings and generates a list of lists of words from the strings. The returned list should have the first word for each string followed by the following words for each string.
  def get_word_lists(strings):
      word_lists = []
      for string in strings:
          words = string.split(" ")
          word_list = []
          for i in range(len(words)):
              word_list.append(words[i:])
          word_lists.append(word_list)
      return word_lists
  
  assert get_word_lists(["Hello world", "This is a test"]) == [[['Hello', 'world'], ['world']], [['This', 'is', 'a', 'test'], ['is', 'a', 'test'], ['a', 'test'], ['test']]]
output: def get_word_lists(strings):
      word_lists = []
      for string in strings:
          words = string.split(" ")
          word_list = []
          for i in range(len(words)):
              word_list.append(words[i:])
          word_lists.append(word_list)
      return word_lists