English irregular verbs.
To run
He ran
To keep
He kept
To make
He made
To say
He said
To find
He found
To become
He became
To leave
He left
To feel
He felt
To write
He wrote
To build
He built
To hold
He held
To choose
He chose
To understand
He understood
To see
He saw
To stand
He stood
To read
He read
To buy
He bought
To go
He went
He thought
To break
It broke