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 can't pup you can't pup he can't pup we can't pup you can't pup they can't pup	I can't be pupping you can't be pupping he can't be pupping we can't be pupping you can't be pupping they can't be pupping
Perfect	V-ing perfect
I can't have pupped you can't have pupped he can't have pupped we can't have pupped you can't have pupped they can't have pupped	I can't have been pupping you can't have been pupping he can't have been pupping we can't have been pupping you can't have been pupping they can't 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't I pup? can't you pup? can't he pup? can't we pup? can't you pup? can't they pup?	can't I be pupping? can't you be pupping? can't he be pupping? can't we be pupping? can't you be pupping? can't they be pupping?
Perfect	V-ing perfect
can't I have pupped? can't you have pupped? can't he have pupped? can't we have pupped? can't you have pupped? can't they have pupped?	can't I have been pupping? can't you have been pupping? can't he have been pupping? can't we have been pupping? can't you have been pupping? can't they have been pupping?