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tener
tuv
andar
anduv
estar
estuv
poder
pud
poner
pus
querer
quis
caber
cup
saber
sup
venir
vin
hacer
hic/ hiz
traer
traj
decir
dij
traducir
traduj
haber
hubo
conocer ( meaning change in the preterite)
met
poder ( meaning change in the preterite)
managed to
saber ( meaning change in the preterite)
found out
querer ( meaning change in the preterite)
tried
no querer ( meaning change in the preterite)
refused
tener ( meaning change in the preterite)
had, got, received
Decir ( they form conjugation in the preterite)
dijeron
Traer (they form conjugation in the preterite)
trajeron
dormir
durmió, durmieron (to sleep)
pedir
pidió, pidieron (to order, ask for)
preferir
prefirió, prefirieron ( to prefer)
morir
murió, murieron ( to die)
seguir
siguió, siguieron ( to continue, follow)
repetir
repitió, repitieron ( to repeat)
mentir
mintió, mintieron (to lie)
servir
sirvió, sirvieron ( to serve)