English verb conjugation
CAN SUP

Regular verb: sup - supped - supped

Affirmation

Simple form	V-ing form
I can sup you can sup he can sup we can sup you can sup they can sup	I can be supping you can be supping he can be supping we can be supping you can be supping they can be supping
Perfect	V-ing perfect
I can have supped you can have supped he can have supped we can have supped you can have supped they can have supped	I can have been supping you can have been supping he can have been supping we can have been supping you can have been supping they can have been supping

Negation

Simple form	V-ing form
I cannot sup you cannot sup he cannot sup we cannot sup you cannot sup they cannot sup	I cannot be supping you cannot be supping he cannot be supping we cannot be supping you cannot be supping they cannot be supping
Perfect	V-ing perfect
I cannot have supped you cannot have supped he cannot have supped we cannot have supped you cannot have supped they cannot have supped	I cannot have been supping you cannot have been supping he cannot have been supping we cannot have been supping you cannot have been supping they cannot have been supping

Interrogative form

Simple form	V-ing form
can I sup? can you sup? can he sup? can we sup? can you sup? can they sup?	can I be supping? can you be supping? can he be supping? can we be supping? can you be supping? can they be supping?
Perfect	V-ing perfect
can I have supped? can you have supped? can he have supped? can we have supped? can you have supped? can they have supped?	can I have been supping? can you have been supping? can he have been supping? can we have been supping? can you have been supping? can they have been supping?

Interro-negative form

Simple form	V-ing form
can I not sup? can you not sup? can he not sup? can we not sup? can you not sup? can they not sup?	can I not be supping? can you not be supping? can he not be supping? can we not be supping? can you not be supping? can they not be supping?
Perfect	V-ing perfect
can I not have supped? can you not have supped? can he not have supped? can we not have supped? can you not have supped? can they not have supped?	can I not have been supping? can you not have been supping? can he not have been supping? can we not have been supping? can you not have been supping? can they not have been supping?