Know
knew - known
Catch
caught - caught
buy
bought - bought
Hear
heard - heard
Cost
cost - cost
Hurt
hurt - hurt
Fall
fell - fallen
Say
said - said
Bet
bet - bet
Let
let - let
Lose
lost - lost
Fight
fought - fought
Eat
ate - eaten
Go
went - gone
Come
came - come
Sleep
slept - slept
Learn
learnt - learnt
Lie
lay - lain
Freeze
froze - frozen
Fly
flew - flown
Burn
burnt - burnt
Can
could