English verb conjugation
CAN PUP

Regular verb: pup - pupped - pupped

Affirmation

Simple form	V-ing form
I can pup you can pup he can pup we can pup you can pup they can pup	I can be pupping you can be pupping he can be pupping we can be pupping you can be pupping they can be pupping
Perfect	V-ing perfect
I can have pupped you can have pupped he can have pupped we can have pupped you can have pupped they can have pupped	I can have been pupping you can have been pupping he can have been pupping we can have been pupping you can have been pupping they can have been pupping

Negation

Simple form	V-ing form
I cannot pup you cannot pup he cannot pup we cannot pup you cannot pup they cannot pup	I cannot be pupping you cannot be pupping he cannot be pupping we cannot be pupping you cannot be pupping they cannot be pupping
Perfect	V-ing perfect
I cannot have pupped you cannot have pupped he cannot have pupped we cannot have pupped you cannot have pupped they cannot have pupped	I cannot have been pupping you cannot have been pupping he cannot have been pupping we cannot have been pupping you cannot have been pupping they cannot have been pupping

Interrogative form

Simple form	V-ing form
can I pup? can you pup? can he pup? can we pup? can you pup? can they pup?	can I be pupping? can you be pupping? can he be pupping? can we be pupping? can you be pupping? can they be pupping?
Perfect	V-ing perfect
can I have pupped? can you have pupped? can he have pupped? can we have pupped? can you have pupped? can they have pupped?	can I have been pupping? can you have been pupping? can he have been pupping? can we have been pupping? can you have been pupping? can they have been pupping?

Interro-negative form

Simple form	V-ing form
can I not pup? can you not pup? can he not pup? can we not pup? can you not pup? can they not pup?	can I not be pupping? can you not be pupping? can he not be pupping? can we not be pupping? can you not be pupping? can they not be pupping?
Perfect	V-ing perfect
can I not have pupped? can you not have pupped? can he not have pupped? can we not have pupped? can you not have pupped? can they not have pupped?	can I not have been pupping? can you not have been pupping? can he not have been pupping? can we not have been pupping? can you not have been pupping? can they not have been pupping?