She can...
swim
He can / can't swim.
can't
She / He can run.
She
He can / can't run.
can't
She / He can't sing.
He
She can...
sing
He can't...
climb
It can / can't climb.
can
He can...
cook
He can / can't cook.
can't
He / She can't dive.
He
He can...
dive
He / She can fly.
It
He can't...
fly
He can...
jump
She can / can't jump.
can
