stem changing verbs

empezar

e?ie//to begin, to start

entender

e?ie//to understand

querer

e?ie//to want

pensar

e?ie//to think

preferir

e?ie//to prefer

dormir

o?ue//to sleep

poder

o?ue//to be able to

almorzar

o?ue//to eat lunch

recordar

o?ue//to remember

pedir

e?i//to ask for, to order

servir

e?i//to serve

repetir

e?i//to repeat

jugar

u?ue//to play

cerrar

e?ie//to put on clothes

volver

o?ue//to return

mostrar

o?ue//to show

costar

o?ue//to cost

perder

e?ie//to lose