irregular
-ar
-er
-ir
stem changing
100

to have

tener

100

to cry

llorar

100

to grow

crecer

100

to cover

cubrir

100

to ask for

pedir (e-i)

200

to be (descriptions)

ser

200

to forget

olvidar

200

to know (facts)

saber

200

to open

abrir

200

to think

pensar (e to ie)

300

to go

ir

300

to take care of

cuidar

300

to belive

creer

300

to live

vivir

300

to be able 

poder (o-ue)

400

to say, tell

decir

400

to change

cambiar

400

to know (people)

conocer

400

to attend

asistir

400

to begin

empezar (e-ie)
500

to be (location/emotions)

estar
500

to teach

enseƱar

500
to put, place

poner

500
to write

escribir

500

to die

morir (o-ue)

M
e
n
u