English verb conjugation
COULD VITALIZE

Regular verb: vitalize - vitalized - vitalized

Affirmation

Simple form	V-ing form
I could vitalize you could vitalize he could vitalize we could vitalize you could vitalize they could vitalize	I could be vitalizing you could be vitalizing he could be vitalizing we could be vitalizing you could be vitalizing they could be vitalizing
Perfect	V-ing perfect
I could have vitalized you could have vitalized he could have vitalized we could have vitalized you could have vitalized they could have vitalized	I could have been vitalizing you could have been vitalizing he could have been vitalizing we could have been vitalizing you could have been vitalizing they could have been vitalizing

Negation

Simple form	V-ing form
I could not vitalize you could not vitalize he could not vitalize we could not vitalize you could not vitalize they could not vitalize	I could not be vitalizing you could not be vitalizing he could not be vitalizing we could not be vitalizing you could not be vitalizing they could not be vitalizing
Perfect	V-ing perfect
I could not have vitalized you could not have vitalized he could not have vitalized we could not have vitalized you could not have vitalized they could not have vitalized	I could not have been vitalizing you could not have been vitalizing he could not have been vitalizing we could not have been vitalizing you could not have been vitalizing they could not have been vitalizing

Interrogative form

Simple form	V-ing form
could I vitalize? could you vitalize? could he vitalize? could we vitalize? could you vitalize? could they vitalize?	could I be vitalizing? could you be vitalizing? could he be vitalizing? could we be vitalizing? could you be vitalizing? could they be vitalizing?
Perfect	V-ing perfect
could I have vitalized? could you have vitalized? could he have vitalized? could we have vitalized? could you have vitalized? could they have vitalized?	could I have been vitalizing? could you have been vitalizing? could he have been vitalizing? could we have been vitalizing? could you have been vitalizing? could they have been vitalizing?

Interro-negative form

Simple form	V-ing form
could I not vitalize? could you not vitalize? could he not vitalize? could we not vitalize? could you not vitalize? could they not vitalize?	could I not be vitalizing? could you not be vitalizing? could he not be vitalizing? could we not be vitalizing? could you not be vitalizing? could they not be vitalizing?
Perfect	V-ing perfect
could I not have vitalized? could you not have vitalized? could he not have vitalized? could we not have vitalized? could you not have vitalized? could they not have vitalized?	could I not have been vitalizing? could you not have been vitalizing? could he not have been vitalizing? could we not have been vitalizing? could you not have been vitalizing? could they not have been vitalizing?