Pronouns are words that replace nouns, and they typically fall into categories like:
* Personal pronouns: I, me, you, he, him, she, her, it, we, us, they, them
* Possessive pronouns: mine, yours, his, hers, its, ours, theirs
* Reflexive pronouns: myself, yourself, himself, herself, itself, ourselves, yourselves, themselves
* Demonstrative pronouns: this, that, these, those
* Interrogative pronouns: who, whom, whose, what, which
As you can see, none of these categories include pronouns starting with "p".