English verb conjugation
COULD ENHANCE

Regular verb: enhance - enhanced - enhanced

Affirmation

Simple form	V-ing form
I could enhance you could enhance he could enhance we could enhance you could enhance they could enhance	I could be enhancing you could be enhancing he could be enhancing we could be enhancing you could be enhancing they could be enhancing
Perfect	V-ing perfect
I could have enhanced you could have enhanced he could have enhanced we could have enhanced you could have enhanced they could have enhanced	I could have been enhancing you could have been enhancing he could have been enhancing we could have been enhancing you could have been enhancing they could have been enhancing

Negation

Simple form	V-ing form
I could not enhance you could not enhance he could not enhance we could not enhance you could not enhance they could not enhance	I could not be enhancing you could not be enhancing he could not be enhancing we could not be enhancing you could not be enhancing they could not be enhancing
Perfect	V-ing perfect
I could not have enhanced you could not have enhanced he could not have enhanced we could not have enhanced you could not have enhanced they could not have enhanced	I could not have been enhancing you could not have been enhancing he could not have been enhancing we could not have been enhancing you could not have been enhancing they could not have been enhancing

Interrogative form

Simple form	V-ing form
could I enhance? could you enhance? could he enhance? could we enhance? could you enhance? could they enhance?	could I be enhancing? could you be enhancing? could he be enhancing? could we be enhancing? could you be enhancing? could they be enhancing?
Perfect	V-ing perfect
could I have enhanced? could you have enhanced? could he have enhanced? could we have enhanced? could you have enhanced? could they have enhanced?	could I have been enhancing? could you have been enhancing? could he have been enhancing? could we have been enhancing? could you have been enhancing? could they have been enhancing?

Interro-negative form

Simple form	V-ing form
could I not enhance? could you not enhance? could he not enhance? could we not enhance? could you not enhance? could they not enhance?	could I not be enhancing? could you not be enhancing? could he not be enhancing? could we not be enhancing? could you not be enhancing? could they not be enhancing?
Perfect	V-ing perfect
could I not have enhanced? could you not have enhanced? could he not have enhanced? could we not have enhanced? could you not have enhanced? could they not have enhanced?	could I not have been enhancing? could you not have been enhancing? could he not have been enhancing? could we not have been enhancing? could you not have been enhancing? could they not have been enhancing?