English verb conjugation
COULD DAMAGE

Regular verb: damage - damaged - damaged

Affirmation

Simple form	V-ing form
I could damage you could damage he could damage we could damage you could damage they could damage	I could be damaging you could be damaging he could be damaging we could be damaging you could be damaging they could be damaging
Perfect	V-ing perfect
I could have damaged you could have damaged he could have damaged we could have damaged you could have damaged they could have damaged	I could have been damaging you could have been damaging he could have been damaging we could have been damaging you could have been damaging they could have been damaging

Negation

Simple form	V-ing form
I could not damage you could not damage he could not damage we could not damage you could not damage they could not damage	I could not be damaging you could not be damaging he could not be damaging we could not be damaging you could not be damaging they could not be damaging
Perfect	V-ing perfect
I could not have damaged you could not have damaged he could not have damaged we could not have damaged you could not have damaged they could not have damaged	I could not have been damaging you could not have been damaging he could not have been damaging we could not have been damaging you could not have been damaging they could not have been damaging

Interrogative form

Simple form	V-ing form
could I damage? could you damage? could he damage? could we damage? could you damage? could they damage?	could I be damaging? could you be damaging? could he be damaging? could we be damaging? could you be damaging? could they be damaging?
Perfect	V-ing perfect
could I have damaged? could you have damaged? could he have damaged? could we have damaged? could you have damaged? could they have damaged?	could I have been damaging? could you have been damaging? could he have been damaging? could we have been damaging? could you have been damaging? could they have been damaging?

Interro-negative form

Simple form	V-ing form
could I not damage? could you not damage? could he not damage? could we not damage? could you not damage? could they not damage?	could I not be damaging? could you not be damaging? could he not be damaging? could we not be damaging? could you not be damaging? could they not be damaging?
Perfect	V-ing perfect
could I not have damaged? could you not have damaged? could he not have damaged? could we not have damaged? could you not have damaged? could they not have damaged?	could I not have been damaging? could you not have been damaging? could he not have been damaging? could we not have been damaging? could you not have been damaging? could they not have been damaging?