Give-gave-given
go-went-gone
do-did-done
buy-bought-bought
see-saw-seen
have-had-had
sit-sat-sat
show-showed-shown
think-thought-thought
take-took-taken
put-put-put
stand-stood-stood
tell-told-told
understand-understood-understood
say-said-said
run-ran-run
get-got-got
Остальные правильные вроде, просто добавляешь -ed в конце)))