English verb conjugation
CAN PHOTOGRAPH

Regular verb: photograph - photographed - photographed

Affirmation

Simple form	V-ing form
I can photograph you can photograph he can photograph we can photograph you can photograph they can photograph	I can be photographing you can be photographing he can be photographing we can be photographing you can be photographing they can be photographing
Perfect	V-ing perfect
I can have photographed you can have photographed he can have photographed we can have photographed you can have photographed they can have photographed	I can have been photographing you can have been photographing he can have been photographing we can have been photographing you can have been photographing they can have been photographing

Negation

Simple form	V-ing form
I cannot photograph you cannot photograph he cannot photograph we cannot photograph you cannot photograph they cannot photograph	I cannot be photographing you cannot be photographing he cannot be photographing we cannot be photographing you cannot be photographing they cannot be photographing
Perfect	V-ing perfect
I cannot have photographed you cannot have photographed he cannot have photographed we cannot have photographed you cannot have photographed they cannot have photographed	I cannot have been photographing you cannot have been photographing he cannot have been photographing we cannot have been photographing you cannot have been photographing they cannot have been photographing

Interrogative form

Simple form	V-ing form
can I photograph? can you photograph? can he photograph? can we photograph? can you photograph? can they photograph?	can I be photographing? can you be photographing? can he be photographing? can we be photographing? can you be photographing? can they be photographing?
Perfect	V-ing perfect
can I have photographed? can you have photographed? can he have photographed? can we have photographed? can you have photographed? can they have photographed?	can I have been photographing? can you have been photographing? can he have been photographing? can we have been photographing? can you have been photographing? can they have been photographing?

Interro-negative form

Simple form	V-ing form
can I not photograph? can you not photograph? can he not photograph? can we not photograph? can you not photograph? can they not photograph?	can I not be photographing? can you not be photographing? can he not be photographing? can we not be photographing? can you not be photographing? can they not be photographing?
Perfect	V-ing perfect
can I not have photographed? can you not have photographed? can he not have photographed? can we not have photographed? can you not have photographed? can they not have photographed?	can I not have been photographing? can you not have been photographing? can he not have been photographing? can we not have been photographing? can you not have been photographing? can they not have been photographing?