buy
bought / bought
come
came / come
bring
brought / brought
cut
cut / cut
draw
drew / drawn
dig
dug / dug
break
broke / broken
drive
drove / driven
drink
drank / drunk
do
did / done
bite
bit / bitten
catch
caught / caught
build
built / built
burn
burnt / burnt
begin
began / begun
become
became / become
be
was, were / been
cost
cost / cost