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: the drain is clogged with hair. it has to be cleaned.

Output: it


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

Output: she


Input: Consider Input: the dog chased the cat, which ran up a tree. it waited at the top.


Output: it