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.

Ex Input:
there is a gap in the wall. you can see the garden behind it .

Ex Output:
you, it


Ex Input:
frank felt vindicated when his longtime rival bill revealed that he was the winner of the competition.

Ex Output:
his, he


Ex Input:
sid explained his theory to mark but he couldn't understand him.

Ex Output:

his, he, him