PAY
PAID
KNOW
KNEW
TELL
TOLD
BUY
BOUGHT
FLY
FLEW
SLEEP
SLEPT
EAT
ATE
RUN
RAN
DRIVE
DROVE
READ
READ
SEND
SENT
GIVE
GAVE
SWIM
SWAM
WRITE
WROTE
MAKE
MADE
GO
WENT
DRINK
DRANK