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 used an old rag to clean the knife, and then i put it in the trash.
Example Output: i, it

Example Input: ann asked mary what time the library closes, but she had forgotten.
Example Output: she

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