CONJUGUEMOS REFERENCE

PRESENT: Irregular in the YO form

Rules:

The majority of irregular verbs in the YO form are also called GO verbs because the first person conjugation ends in GO. These verbs tend to be irregular in other tenses as well. Here the most common GO verbs along with their GO conjugation.

hacer to do, to make haGO
decir to say diGO
salir to leave salGO
tener to have tenGO
traer to bring traiGO
venir to come venGO

Two other common verbs which are irregular in the YO form but don't follow the above pattern are dar and ver.

dar to give DOY
ver to see VEO