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: my meeting started at 4:00 and i needed to catch the train at 4:30, so there wasn't much time. luckily, it was short, so it worked out.
Example Output: my, i, it

Example Input: jim comforted kevin because he was so upset.
Example Output: he

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