pedir

e to i (to ask)

servir

e to i (to serve)

repetir

e to i (to repeat)

vestir(se)

e to i (to wear)

reir

e to i (to laugh)

sonreir

e to i (to smile)

competir

e to i (to compete)

perder

e to ie (to lose)

pensar

e to ie (to think)

preferir

e to ie (to prefer)

querer

e to ie (to want)

confesar

e to ie (to confess)

defender

e to ie (to defend)

cerrar

e to ie (to close)

quebrar

e to ie (to break)

empezar

e to ie (to start)

gobernar

e to ie (to govern)

comenzar

e to ie (to begin)

entender

e to ie (to understand)

mentir

e to ie (to lie)

sentir (se)

e to ie (to feel)

sentar (se)

e to ie (to sit down)

divertir (se)

e to ie (to have fun)

despertar

e to ie (to wake up)

poder

o or u to ue (to be able to)

almorzar

o or u to ue (to have lunch)

dormir

o or u to ue (to sleep)

jugar

o or u to ue (to play)

encontrar

o or u to ue (to find)

contar

o or u to ue (to count)

costar

o or u to ue (to cost)

soñar

o or u to ue (to dream)

sonar

o or u to ue (to sound)

mostrar

o or u to ue (to show)

volar

o or u to ue (to fly)

volver

o or u to ue (to return)

recordar

o or u to ue (to remember)

resolver

o or u to ue (to resolve)

soler

o or u to ue (to usually do)

mover

o or u to ue (to move)

acostar (se)

o or u to ue (to lie down)

merecer

-zco (YO FORM ONLY) (to deserve)

obedecer

-zco (YO FORM ONLY) (to obey)

conocer

-zco (YO FORM ONLY) (to know)

parecer

-zco (YO FORM ONLY) (to look like)

desparecer

-zco (YO FORM ONLY) (to dissapear)

reconocer

-zco (YO FORM ONLY) (to recognize)

conducir

-zco (YO FORM ONLY) (to drive)

producir

-zco (YO FORM ONLY) (to produce)

traducir

-zco (YO FORM ONLY) (to translate)