Indicate all the pronouns (they, them, you, he, his, her, you, it, etc.) present in the given sentence. If there are multiple such pronouns in a sentence, then list them in the order of their first appearance in the given sentence. If a pronoun appears multiple times in a sentence, list it only once.

Ex Input:
in the middle of the outdoor concert, the rain started falling, and it continued until 10.

Ex Output:
it


Ex Input:
the dog chased the cat, which ran up a tree. it waited at the bottom.

Ex Output:
it


Ex Input:
the lawyer asked the witness a question, but he was reluctant to answer it.

Ex Output:
he, it