3 forms equal
Cut
cut - cut
Ring
rang - rung
Buy
bought - bought
Build
built - built
Write
wrote - written
Hit
hit - hit
Sing
Catch
caught - caught
Spend
spent - spent
Drive
drove - driven
Hurt
hurt - hurt
Drink
drank - drunk
Teach
taught - taught
Send
sent - sent
Break
broke - broken
Cost
cost - cost
Swim
swam - swum
Think
thought - thought
Learn
learnt - learnt
Speak
spoke - spoken
Put
put - put
Begin
began - begun
Bring
brought - brought
Dream
dreamt - dreamt
Forget
forgot - forgotten