present -> past
begin
began
sit
sat
I am
I was
had
have
said
say
make
made
send
sent
she is
she was
sang
sing
wrote
write
drink
drank
fall
fell
you are
you were
told
tell
slept
sleep
bring
brought
read
read
it is
it was
spoke
speak
met
meet
buy
bought
eat
ate
you (all) are
you were
saw
see
flew
fly