I can dicker you can dicker she can dicker we can dicker you can dicker they can dicker
V-ing form
I can be dickering you can be dickering she can be dickering we can be dickering you can be dickering they can be dickering
Perfect
I can have dickered you can have dickered she can have dickered we can have dickered you can have dickered they can have dickered
V-ing perfect
I can have been dickering you can have been dickering she can have been dickering we can have been dickering you can have been dickering they can have been dickering
Negation
Simple form
I can't dicker you can't dicker she can't dicker we can't dicker you can't dicker they can't dicker
V-ing form
I can't be dickering you can't be dickering she can't be dickering we can't be dickering you can't be dickering they can't be dickering
Perfect
I can't have dickered you can't have dickered she can't have dickered we can't have dickered you can't have dickered they can't have dickered
V-ing perfect
I can't have been dickering you can't have been dickering she can't have been dickering we can't have been dickering you can't have been dickering they can't have been dickering
Interrogative form
Simple form
can I dicker? can you dicker? can she dicker? can we dicker? can you dicker? can they dicker?
V-ing form
can I be dickering? can you be dickering? can she be dickering? can we be dickering? can you be dickering? can they be dickering?
Perfect
can I have dickered? can you have dickered? can she have dickered? can we have dickered? can you have dickered? can they have dickered?
V-ing perfect
can I have been dickering? can you have been dickering? can she have been dickering? can we have been dickering? can you have been dickering? can they have been dickering?
Interro-negative form
Simple form
can't I dicker? can't you dicker? can't she dicker? can't we dicker? can't you dicker? can't they dicker?
V-ing form
can't I be dickering? can't you be dickering? can't she be dickering? can't we be dickering? can't you be dickering? can't they be dickering?
Perfect
can't I have dickered? can't you have dickered? can't she have dickered? can't we have dickered? can't you have dickered? can't they have dickered?
V-ing perfect
can't I have been dickering? can't you have been dickering? can't she have been dickering? can't we have been dickering? can't you have been dickering? can't they have been dickering?