sing
sang
swim
swam
sleep
slept
ride
rode
write
wrote
fly
flew
see
saw
give
gave
do
did
take
took
buy
bought
think
thought
go
went
wear
wore
say
said
eat
ate
hide
hid
drink
drank
teach
taught
make
made
run
ran
read
read
fall
fell
have
had