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:
the painting in mark's living room shows an oak tree. it is to the right of the bookcase.

Ex Output:
it


Ex Input:
sam's drawing was hung just above tina's and it did look much better with another one above it.

Ex Output:
it


Ex Input:
i saw jim yelling at some guy in a military uniform with a huge red beard. i don't know who he was, but he looked very unhappy.

Ex Output:
i, he