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: i couldn't put the pot on the shelf because it was too high.
Example Output: i, it

Example Input: the customer walked into the bank and stabbed one of the tellers. he was immediately taken to the police station.
Example Output: he

Example Input: the sculpture rolled off the shelf because it wasn't level.
Example Output:
it