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.

Example Input: john couldn't see the stage with billy in front of him because he is so short.
Example Output: him, he

Example Input: in the middle of the outdoor concert, the rain started falling, but it continued until 10.
Example Output: it

Example Input: i poured water from the bottle into the cup until it was full.
Example Output:
i, it