English verb conjugation
CAN BALL

Regular verb: ball - balled - balled

Affirmation

Simple form	V-ing form
I can ball you can ball he can ball we can ball you can ball they can ball	I can be balling you can be balling he can be balling we can be balling you can be balling they can be balling
Perfect	V-ing perfect
I can have balled you can have balled he can have balled we can have balled you can have balled they can have balled	I can have been balling you can have been balling he can have been balling we can have been balling you can have been balling they can have been balling

Negation

Simple form	V-ing form
I can't ball you can't ball he can't ball we can't ball you can't ball they can't ball	I can't be balling you can't be balling he can't be balling we can't be balling you can't be balling they can't be balling
Perfect	V-ing perfect
I can't have balled you can't have balled he can't have balled we can't have balled you can't have balled they can't have balled	I can't have been balling you can't have been balling he can't have been balling we can't have been balling you can't have been balling they can't have been balling

Interrogative form

Simple form	V-ing form
can I ball? can you ball? can he ball? can we ball? can you ball? can they ball?	can I be balling? can you be balling? can he be balling? can we be balling? can you be balling? can they be balling?
Perfect	V-ing perfect
can I have balled? can you have balled? can he have balled? can we have balled? can you have balled? can they have balled?	can I have been balling? can you have been balling? can he have been balling? can we have been balling? can you have been balling? can they have been balling?

Interro-negative form

Simple form	V-ing form
can't I ball? can't you ball? can't he ball? can't we ball? can't you ball? can't they ball?	can't I be balling? can't you be balling? can't he be balling? can't we be balling? can't you be balling? can't they be balling?
Perfect	V-ing perfect
can't I have balled? can't you have balled? can't he have balled? can't we have balled? can't you have balled? can't they have balled?	can't I have been balling? can't you have been balling? can't he have been balling? can't we have been balling? can't you have been balling? can't they have been balling?