Stem changing verbs
e – ie
to close	cerrar	to start, begin	comenzar
to awaken	despertar	to defend	defender
to understand	entender	to start, begin	empezar
to deny	negar	to think	pensar
to lose	perder	to want	querer
to lie	mentir	to prefer	preferir
to regret	sentir	to suggest	sugerir

o - ue
to remember	acordar	to lunch	almorzar
to tell, count	contra	to cost	costar
to meet, find	encontrar	to show	mostrar
to prove	probar	to remember	recorder
to return, give back	devolver	to wrap	envolver
to move	mover	to be able	poder
to return	volver	to sleep	dormer
to die	morir

e - i
to dismiss, fire	despedir	to fry	freír
to impede	impeder	to measure	medir
to ask for	pedir	to laugh	reír
to argue	reñir	to repeat	repetir
so serve	server	to smile	sonreír
to follow	seguir	to get	conseguir
to follow after	perseguir

u - ue
to play	jugar