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 cat was lying by the mouse hole waiting for the mouse, but it was too cautious.
Example Output: it

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: susan knows all about ann's personal problems because she is nosy.
Example Output:
she