English verb conjugation
COULD CHARM

Regular verb: charm - charmed - charmed

Affirmation

Simple form	V-ing form
I could charm you could charm he could charm we could charm you could charm they could charm	I could be charming you could be charming he could be charming we could be charming you could be charming they could be charming
Perfect	V-ing perfect
I could have charmed you could have charmed he could have charmed we could have charmed you could have charmed they could have charmed	I could have been charming you could have been charming he could have been charming we could have been charming you could have been charming they could have been charming

Negation

Simple form	V-ing form
I couldn't charm you couldn't charm he couldn't charm we couldn't charm you couldn't charm they couldn't charm	I couldn't be charming you couldn't be charming he couldn't be charming we couldn't be charming you couldn't be charming they couldn't be charming
Perfect	V-ing perfect
I couldn't have charmed you couldn't have charmed he couldn't have charmed we couldn't have charmed you couldn't have charmed they couldn't have charmed	I couldn't have been charming you couldn't have been charming he couldn't have been charming we couldn't have been charming you couldn't have been charming they couldn't have been charming

Interrogative form

Simple form	V-ing form
could I charm? could you charm? could he charm? could we charm? could you charm? could they charm?	could I be charming? could you be charming? could he be charming? could we be charming? could you be charming? could they be charming?
Perfect	V-ing perfect
could I have charmed? could you have charmed? could he have charmed? could we have charmed? could you have charmed? could they have charmed?	could I have been charming? could you have been charming? could he have been charming? could we have been charming? could you have been charming? could they have been charming?

Interro-negative form

Simple form	V-ing form
couldn't I charm? couldn't you charm? couldn't he charm? couldn't we charm? couldn't you charm? couldn't they charm?	couldn't I be charming? couldn't you be charming? couldn't he be charming? couldn't we be charming? couldn't you be charming? couldn't they be charming?
Perfect	V-ing perfect
couldn't I have charmed? couldn't you have charmed? couldn't he have charmed? couldn't we have charmed? couldn't you have charmed? couldn't they have charmed?	couldn't I have been charming? couldn't you have been charming? couldn't he have been charming? couldn't we have been charming? couldn't you have been charming? couldn't they have been charming?