English verb conjugation
COULD CHARM

Regular verb: charm - charmed - charmed

Affirmation

Simple form	V-ing form
I could charm you could charm she could charm we could charm you could charm they could charm	I could be charming you could be charming she 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 she 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 she 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 she 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 she 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 she 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 she 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 she charm? could we charm? could you charm? could they charm?	could I be charming? could you be charming? could she 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 she 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 she 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 she 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 she 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 she 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 she have been charming? couldn't we have been charming? couldn't you have been charming? couldn't they have been charming?