V1

V2

V3

V to be ( is , am , are )

was , were

been

V to do ( d0 , does )

did

done

V to have ( has , have )

had

had

eat

ate

eaten

swim

swam

swum

run

ran

run

go

went

gone

write

wrote

written

sit

sat

sat

read

read

read

clean

cleaned

cleaned

walk

walked

walked

play

played

played

sleep

slept

slept

speak

spoke

spoken

listen

listened

listened