Some Spanish verbs evolved from Latin in such a way that they are termed "irregular". There are various categories of irregular verbs, one of which is the category of verbs with irregular 1st person, or YO. Certain irregular yo verbs end in a "GO", thus I term them "Go verbs". Common "Go verbs" include examples such as the following: Salir, poner, suponer, hacer, traer, oir, tener, venir, and decir. Let's begin with salir, poner, suponer and hacer. First, we drop the ending and are left with the stem. For the irregular Yo, add a "go" and you have Yo salgo, Yo pongo, Yo supongo and Yo hago. For the other 5 persons, add the regular present tense endings to the stem. For example, Salir would conjugate in the following way: Salgo, Sales, Sale, Salimos, Salís, and Salen Other than the YO form, traer is treated as a perfectly regular verb. The yo form is TRAIGO, followed by Traes, trae, traemos, traéis, and Traen. Like, traer, OIR contains an additional "i" that was not present once the ending was dropped. The yo form of OIR is OIGO (I hear) followed by oyes, oye, oímos, oís, and oyen. The best way to learn these is to write them and say them out loud several times, which will aid in memorization. In the exercise that follows, write the yo form for the following verbs.