b-c
to do
did
to have - to make
had - made
to put - to read - to send - to shut
put - read - sent - shut
to sing - to sit - to swim
sang - sat - swam
to can
could
drank - gave
to hurt - to let
hurt - let
to pay - to say
paid - said
to (under)stand - to take
(under)stood - took
to (be)come
to (for)get - to find - to fight
(for)got - found - fought
to hear - to learn - to mean
heard - learnt - meant
to sell - to show
sold - showed
to speak - to steal - to tell - to wake - to wear - to win - to write
spoke - stole - told - woke - wore - won - wrote
to bring - to buy
brought - bought
to drive - to fall - to feel
drove - fell - felt
to keep - to leave - to meet
kept - left - met
to ride
rode
to teach - to think
taught - thought
to begin - to break - to choose
began - broke - chose
to eat - to go
ate - went
to know - to lose
knew - lost
to ring - to run - to see
rang - ran - saw
to sleep - to spend - to throw
slept - spent - threw