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 can't photograph you can't photograph he can't photograph we can't photograph you can't photograph they can't photograph	I can't be photographing you can't be photographing he can't be photographing we can't be photographing you can't be photographing they can't be photographing
Perfect	V-ing perfect
I can't have photographed you can't have photographed he can't have photographed we can't have photographed you can't have photographed they can't have photographed	I can't have been photographing you can't have been photographing he can't have been photographing we can't have been photographing you can't have been photographing they can't 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't I photograph? can't you photograph? can't he photograph? can't we photograph? can't you photograph? can't they photograph?	can't I be photographing? can't you be photographing? can't he be photographing? can't we be photographing? can't you be photographing? can't they be photographing?
Perfect	V-ing perfect
can't I have photographed? can't you have photographed? can't he have photographed? can't we have photographed? can't you have photographed? can't they have photographed?	can't I have been photographing? can't you have been photographing? can't he have been photographing? can't we have been photographing? can't you have been photographing? can't they have been photographing?