swim
swam - swum
meet
met - met
feel
felt - felt
think
thought - thought
catch
caught caught
be
was/were - been
drive
drove - driven
fly
flew - flown
drink
drank - drunk
build
built - built
learn
learnt - learnt
buy
bought - bought
do
did - done
fall
fell -fallen
break
broke - broken
find
found - found
eat
ate- eaten
know
knew - known
get
got - got
hear
heard - heard