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

Example Input: the painting in mark's living room shows an oak tree. it is to the right of the bookcase.
Example Output: it

Example Input: the painting in mark's living room shows an oak tree. it is to the right of the bookcase.
Example Output:
it