ar
er
ir
reflexive
stem changers
100

to close

cerrar

100

to turn on

aprender

100

to open

abrir

100

to say goodbye, sign off

despedirse

100

to sound

sonar (o-ue)

200

to finish, to end 

acabar, terminar

200

to believe

creer

200

to raise, go up, increase

subir

200

to be used to

acostumbrarse


200

to work

servir (e-i)

300

to love

amar

300

should, to owe

deber

300

to build

construir

300

to complain

quejarse


300
to sit

sentarse (e-ie)

400

to turn off

apagar 

400

to choose

escoger
400
to decide

decidir


400

to turn into, to become

ponerse, volverse

400

to ask for, to request

pedir (e-i)

500

to help

ayudar

500

llevar

take, wear, carry

500

to choose

elegir

500

to join, to get together

juntarse

500

to taste, to prove

probar (o-ue)