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: the sack of potatoes had been placed below the bag of flour, so it had to be moved first.
Example Output: it

Example Input: there is a gap in the wall. you can see the garden through it .
Example Output: you, it

Example Input: joe's uncle can still beat him at tennis, even though he is 30 years younger.
Example Output:
him, he