input: def get_word_lists(strings):
      """
      Given a list of strings, generate a list of lists of words from the strings.
      Each sublist should contain all words starting from the first word in each string.
      Example:
      >>> get_word_lists(["Hello world", "This is a test"])
      [["Hello", "Hello world"], ["This", "This is", "This is a", "This is a test"]]
      """
      word_lists = []
      for string in strings:
          words = string.split(" ")
          word_list = []
          for i in range(len(words)):
              word_list.append(" ".join(words[i:]))
          word_lists.append(word_list)
      return word_lists
output:     word_lists = []
      for string in strings:
          words = string.split(" ")
          word_list = []
          for i in range(len(words)):
              word_list.append(" ".join(words[i:]))
          word_lists.append(word_list)
      return word_lists