I can charm you can charm he can charm we can charm you can charm they can charm
V-ing form
I can be charming you can be charming he can be charming we can be charming you can be charming they can be charming
Perfect
I can have charmed you can have charmed he can have charmed we can have charmed you can have charmed they can have charmed
V-ing perfect
I can have been charming you can have been charming he can have been charming we can have been charming you can have been charming they can have been charming
Negation
Simple form
I can't charm you can't charm he can't charm we can't charm you can't charm they can't charm
V-ing form
I can't be charming you can't be charming he can't be charming we can't be charming you can't be charming they can't be charming
Perfect
I can't have charmed you can't have charmed he can't have charmed we can't have charmed you can't have charmed they can't have charmed
V-ing perfect
I can't have been charming you can't have been charming he can't have been charming we can't have been charming you can't have been charming they can't have been charming
Interrogative form
Simple form
can I charm? can you charm? can he charm? can we charm? can you charm? can they charm?
V-ing form
can I be charming? can you be charming? can he be charming? can we be charming? can you be charming? can they be charming?
Perfect
can I have charmed? can you have charmed? can he have charmed? can we have charmed? can you have charmed? can they have charmed?
V-ing perfect
can I have been charming? can you have been charming? can he have been charming? can we have been charming? can you have been charming? can they have been charming?
Interro-negative form
Simple form
can't I charm? can't you charm? can't he charm? can't we charm? can't you charm? can't they charm?
V-ing form
can't I be charming? can't you be charming? can't he be charming? can't we be charming? can't you be charming? can't they be charming?
Perfect
can't I have charmed? can't you have charmed? can't he have charmed? can't we have charmed? can't you have charmed? can't they have charmed?
V-ing perfect
can't I have been charming? can't you have been charming? can't he have been charming? can't we have been charming? can't you have been charming? can't they have been charming?