I can photograph you can photograph he can photograph we can photograph you can photograph they can photograph
V-ing form
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
I can have photographed you can have photographed he can have photographed we can have photographed you can have photographed they can have photographed
V-ing perfect
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
I can't photograph you can't photograph he can't photograph we can't photograph you can't photograph they can't photograph
V-ing form
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
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
V-ing perfect
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
can I photograph? can you photograph? can he photograph? can we photograph? can you photograph? can they photograph?
V-ing form
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
can I have photographed? can you have photographed? can he have photographed? can we have photographed? can you have photographed? can they have photographed?
V-ing perfect
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
can't I photograph? can't you photograph? can't he photograph? can't we photograph? can't you photograph? can't they photograph?
V-ing form
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
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?
V-ing perfect
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?