I can snap you can snap he can snap we can snap you can snap they can snap
V-ing form
I can be snapping you can be snapping he can be snapping we can be snapping you can be snapping they can be snapping
Perfect
I can have snapped you can have snapped he can have snapped we can have snapped you can have snapped they can have snapped
V-ing perfect
I can have been snapping you can have been snapping he can have been snapping we can have been snapping you can have been snapping they can have been snapping
Negation
Simple form
I can't snap you can't snap he can't snap we can't snap you can't snap they can't snap
V-ing form
I can't be snapping you can't be snapping he can't be snapping we can't be snapping you can't be snapping they can't be snapping
Perfect
I can't have snapped you can't have snapped he can't have snapped we can't have snapped you can't have snapped they can't have snapped
V-ing perfect
I can't have been snapping you can't have been snapping he can't have been snapping we can't have been snapping you can't have been snapping they can't have been snapping
Interrogative form
Simple form
can I snap? can you snap? can he snap? can we snap? can you snap? can they snap?
V-ing form
can I be snapping? can you be snapping? can he be snapping? can we be snapping? can you be snapping? can they be snapping?
Perfect
can I have snapped? can you have snapped? can he have snapped? can we have snapped? can you have snapped? can they have snapped?
V-ing perfect
can I have been snapping? can you have been snapping? can he have been snapping? can we have been snapping? can you have been snapping? can they have been snapping?
Interro-negative form
Simple form
can't I snap? can't you snap? can't he snap? can't we snap? can't you snap? can't they snap?
V-ing form
can't I be snapping? can't you be snapping? can't he be snapping? can't we be snapping? can't you be snapping? can't they be snapping?
Perfect
can't I have snapped? can't you have snapped? can't he have snapped? can't we have snapped? can't you have snapped? can't they have snapped?
V-ing perfect
can't I have been snapping? can't you have been snapping? can't he have been snapping? can't we have been snapping? can't you have been snapping? can't they have been snapping?