English verb conjugation
MUST ENHANCE

Regular verb: enhance - enhanced - enhanced

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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