apestar
stink - stank - stunk
hundirse
sink - sank - sunk
nadar
swim - swam - swum
beber
drink - drank - drunk
sonar
ring - rang - rung
comenzar
begin - began - begun
encogerse
shrink - shrank - shrunk
correr
run - ran - run
cantar
sing - sang - sung
saltar
spring - sprang - sprung