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

Ex Output:
i, he


Ex Input:
my meeting started at 4:00 and i needed to catch the train at 4:30, so there wasn't much time. luckily, it was short, so it worked out.

Ex Output:
my, i, it


Ex Input:
bob paid for charlie's college education, but now charlie acts as though it never happened. he is very hurt.

Ex Output:
it, he