English verb conjugation
COULD REVACCINATE

Regular verb: revaccinate - revaccinated - revaccinated

Affirmation

Simple form	V-ing form
I could revaccinate you could revaccinate she could revaccinate we could revaccinate you could revaccinate they could revaccinate	I could be revaccinating you could be revaccinating she could be revaccinating we could be revaccinating you could be revaccinating they could be revaccinating
Perfect	V-ing perfect
I could have revaccinated you could have revaccinated she could have revaccinated we could have revaccinated you could have revaccinated they could have revaccinated	I could have been revaccinating you could have been revaccinating she could have been revaccinating we could have been revaccinating you could have been revaccinating they could have been revaccinating

Negation

Simple form	V-ing form
I couldn't revaccinate you couldn't revaccinate she couldn't revaccinate we couldn't revaccinate you couldn't revaccinate they couldn't revaccinate	I couldn't be revaccinating you couldn't be revaccinating she couldn't be revaccinating we couldn't be revaccinating you couldn't be revaccinating they couldn't be revaccinating
Perfect	V-ing perfect
I couldn't have revaccinated you couldn't have revaccinated she couldn't have revaccinated we couldn't have revaccinated you couldn't have revaccinated they couldn't have revaccinated	I couldn't have been revaccinating you couldn't have been revaccinating she couldn't have been revaccinating we couldn't have been revaccinating you couldn't have been revaccinating they couldn't have been revaccinating

Interrogative form

Simple form	V-ing form
could I revaccinate? could you revaccinate? could she revaccinate? could we revaccinate? could you revaccinate? could they revaccinate?	could I be revaccinating? could you be revaccinating? could she be revaccinating? could we be revaccinating? could you be revaccinating? could they be revaccinating?
Perfect	V-ing perfect
could I have revaccinated? could you have revaccinated? could she have revaccinated? could we have revaccinated? could you have revaccinated? could they have revaccinated?	could I have been revaccinating? could you have been revaccinating? could she have been revaccinating? could we have been revaccinating? could you have been revaccinating? could they have been revaccinating?

Interro-negative form

Simple form	V-ing form
couldn't I revaccinate? couldn't you revaccinate? couldn't she revaccinate? couldn't we revaccinate? couldn't you revaccinate? couldn't they revaccinate?	couldn't I be revaccinating? couldn't you be revaccinating? couldn't she be revaccinating? couldn't we be revaccinating? couldn't you be revaccinating? couldn't they be revaccinating?
Perfect	V-ing perfect
couldn't I have revaccinated? couldn't you have revaccinated? couldn't she have revaccinated? couldn't we have revaccinated? couldn't you have revaccinated? couldn't they have revaccinated?	couldn't I have been revaccinating? couldn't you have been revaccinating? couldn't she have been revaccinating? couldn't we have been revaccinating? couldn't you have been revaccinating? couldn't they have been revaccinating?