20 Irregular English verbs could be:
See - saw - seen
Be - was/were - been
Drive - drove - driven
Eat - ate - eaten
Fly - flew - flown
Swim - swam - swum
Grow - grew - grown
Keep - kept - kept
Put - put - put
Cut - cut - cut
Cast - cast - cast
Meet - met - met
Teach - taught - taught
Think - thought - thought
Have - had - had
Hear - heard - heard
Read - read - read
Know - knew - known
Sleep - slept - slept
Sit - sat - sat
