she / him / swim
She is helping him to swim
she / her / write
She is helping her to write
she / her / clean
She is helping her (to) clean
she / him / study
She is helping him (to) study
he / him / ride / bicycle
He is helping him to ride the bicycle
they / them / carry / boxes
They are helping them to carry the boxes
he / him / walk
He is helping him (to) walk
he / her / cook
He is helping her (to) cook