El tiempo presente
Irregular YO Verbs
As the title implies, these particular verbs have irregular forms in the 1st person singular (or ¨yo¨ form) that have to be memorized, as there is no definite pattern for recognizing them. However, their conjugations in the other forms do follow regular conjugation rules.
There are 3 categories of Irregular YO verbs.
Your common verbs that end in -go are:
hacer --> hago poner --> pongo *decir --> digo
*tener --> tengo *venir --> vengo
(*These particular verbs are also stem-changers in the boot).
Your common verbs that end in -oy are:
estar --> estoy ser --> soy ir --> voy dar --> doy
Then there are those few verbs that do not follow any specific pattern.
conducir --> conduzco conocer --> conozco saber --> sé
ver --> veo