e-ie stem changers
most verbs with e being the last vowel before infinitive ending
[present]
e-i cases
some ir verbs with e as the last vowel
o-ue changers
most verbs with o as the last vowel
He has lunch
almuerza
It costs
cuesta
He demonstrates
demuestra
He sleeps
duerme
He dies
muere
He moves
mueve
He tests
prueba
He remembers
recuerda
It usually
suele
It flys
vuela
It sounds
suena
He begs
ruega
He stirs
remueve
It promotes
promueve
It can
puede
It shows
muestra
It rains
llueve
He finds
encuentra
It hurts
duele
He counts
cuenta
He approves
aprueba