English verb conjugation
COULD REVITALIZE

Regular verb: revitalize - revitalized - revitalized

Affirmation

Simple form	V-ing form
I could revitalize you could revitalize he could revitalize we could revitalize you could revitalize they could revitalize	I could be revitalizing you could be revitalizing he could be revitalizing we could be revitalizing you could be revitalizing they could be revitalizing
Perfect	V-ing perfect
I could have revitalized you could have revitalized he could have revitalized we could have revitalized you could have revitalized they could have revitalized	I could have been revitalizing you could have been revitalizing he could have been revitalizing we could have been revitalizing you could have been revitalizing they could have been revitalizing

Negation

Simple form	V-ing form
I couldn't revitalize you couldn't revitalize he couldn't revitalize we couldn't revitalize you couldn't revitalize they couldn't revitalize	I couldn't be revitalizing you couldn't be revitalizing he couldn't be revitalizing we couldn't be revitalizing you couldn't be revitalizing they couldn't be revitalizing
Perfect	V-ing perfect
I couldn't have revitalized you couldn't have revitalized he couldn't have revitalized we couldn't have revitalized you couldn't have revitalized they couldn't have revitalized	I couldn't have been revitalizing you couldn't have been revitalizing he couldn't have been revitalizing we couldn't have been revitalizing you couldn't have been revitalizing they couldn't have been revitalizing

Interrogative form

Simple form	V-ing form
could I revitalize? could you revitalize? could he revitalize? could we revitalize? could you revitalize? could they revitalize?	could I be revitalizing? could you be revitalizing? could he be revitalizing? could we be revitalizing? could you be revitalizing? could they be revitalizing?
Perfect	V-ing perfect
could I have revitalized? could you have revitalized? could he have revitalized? could we have revitalized? could you have revitalized? could they have revitalized?	could I have been revitalizing? could you have been revitalizing? could he have been revitalizing? could we have been revitalizing? could you have been revitalizing? could they have been revitalizing?

Interro-negative form

Simple form	V-ing form
couldn't I revitalize? couldn't you revitalize? couldn't he revitalize? couldn't we revitalize? couldn't you revitalize? couldn't they revitalize?	couldn't I be revitalizing? couldn't you be revitalizing? couldn't he be revitalizing? couldn't we be revitalizing? couldn't you be revitalizing? couldn't they be revitalizing?
Perfect	V-ing perfect
couldn't I have revitalized? couldn't you have revitalized? couldn't he have revitalized? couldn't we have revitalized? couldn't you have revitalized? couldn't they have revitalized?	couldn't I have been revitalizing? couldn't you have been revitalizing? couldn't he have been revitalizing? couldn't we have been revitalizing? couldn't you have been revitalizing? couldn't they have been revitalizing?