This document discusses irregular verbs in Spanish. It begins by introducing some example sentences describing physical characteristics of people named Pam, Jim, Dwight and Andy. It then states that the purpose is to talk about irregular verbs. It provides an overview of irregular verbs, noting there are many kinds that vary by tense. It highlights stem-changing verbs as ones where the stem changes during conjugation. Examples of stem-changing verbs are provided, such as tener, querer, recordar, dormir, poder, pensar, and entender. A side note explains the nosotros form always keeps the original stem.