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.

Input: Consider Input: i was trying to open the lock with the key, but someone had filled the keyhole with chewing gum, and i couldn't get it out.

Output: i, it


Input: Consider Input: the delivery truck zoomed by the school bus because it was going so fast.

Output: it


Input: Consider Input: susan knows all about ann's personal problems because she is indiscreet.


Output: she