English verb conjugation
CAN PRESTAMP

Regular verb: prestamp - prestamped - prestamped

Affirmation

Simple form	V-ing form
I can prestamp you can prestamp he can prestamp we can prestamp you can prestamp they can prestamp	I can be prestamping you can be prestamping he can be prestamping we can be prestamping you can be prestamping they can be prestamping
Perfect	V-ing perfect
I can have prestamped you can have prestamped he can have prestamped we can have prestamped you can have prestamped they can have prestamped	I can have been prestamping you can have been prestamping he can have been prestamping we can have been prestamping you can have been prestamping they can have been prestamping

Negation

Simple form	V-ing form
I can't prestamp you can't prestamp he can't prestamp we can't prestamp you can't prestamp they can't prestamp	I can't be prestamping you can't be prestamping he can't be prestamping we can't be prestamping you can't be prestamping they can't be prestamping
Perfect	V-ing perfect
I can't have prestamped you can't have prestamped he can't have prestamped we can't have prestamped you can't have prestamped they can't have prestamped	I can't have been prestamping you can't have been prestamping he can't have been prestamping we can't have been prestamping you can't have been prestamping they can't have been prestamping

Interrogative form

Simple form	V-ing form
can I prestamp? can you prestamp? can he prestamp? can we prestamp? can you prestamp? can they prestamp?	can I be prestamping? can you be prestamping? can he be prestamping? can we be prestamping? can you be prestamping? can they be prestamping?
Perfect	V-ing perfect
can I have prestamped? can you have prestamped? can he have prestamped? can we have prestamped? can you have prestamped? can they have prestamped?	can I have been prestamping? can you have been prestamping? can he have been prestamping? can we have been prestamping? can you have been prestamping? can they have been prestamping?

Interro-negative form

Simple form	V-ing form
can't I prestamp? can't you prestamp? can't he prestamp? can't we prestamp? can't you prestamp? can't they prestamp?	can't I be prestamping? can't you be prestamping? can't he be prestamping? can't we be prestamping? can't you be prestamping? can't they be prestamping?
Perfect	V-ing perfect
can't I have prestamped? can't you have prestamped? can't he have prestamped? can't we have prestamped? can't you have prestamped? can't they have prestamped?	can't I have been prestamping? can't you have been prestamping? can't he have been prestamping? can't we have been prestamping? can't you have been prestamping? can't they have been prestamping?