English verb conjugation
CAN PHOTOGRAPH

Regular verb: photograph - photographed - photographed

Affirmation

Simple form	V-ing form
I can photograph you can photograph she can photograph we can photograph you can photograph they can photograph	I can be photographing you can be photographing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she photograph? can we photograph? can you photograph? can they photograph?	can I be photographing? can you be photographing? can she 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 she 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 she 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 she 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 she 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 she 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 she have been photographing? can't we have been photographing? can't you have been photographing? can't they have been photographing?