English verb conjugation
COULD REVIVE

Regular verb: revive - revived - revived

Affirmation

Simple form	V-ing form
I could revive you could revive he could revive we could revive you could revive they could revive	I could be reviving you could be reviving he could be reviving we could be reviving you could be reviving they could be reviving
Perfect	V-ing perfect
I could have revived you could have revived he could have revived we could have revived you could have revived they could have revived	I could have been reviving you could have been reviving he could have been reviving we could have been reviving you could have been reviving they could have been reviving

Negation

Simple form	V-ing form
I couldn't revive you couldn't revive he couldn't revive we couldn't revive you couldn't revive they couldn't revive	I couldn't be reviving you couldn't be reviving he couldn't be reviving we couldn't be reviving you couldn't be reviving they couldn't be reviving
Perfect	V-ing perfect
I couldn't have revived you couldn't have revived he couldn't have revived we couldn't have revived you couldn't have revived they couldn't have revived	I couldn't have been reviving you couldn't have been reviving he couldn't have been reviving we couldn't have been reviving you couldn't have been reviving they couldn't have been reviving

Interrogative form

Simple form	V-ing form
could I revive? could you revive? could he revive? could we revive? could you revive? could they revive?	could I be reviving? could you be reviving? could he be reviving? could we be reviving? could you be reviving? could they be reviving?
Perfect	V-ing perfect
could I have revived? could you have revived? could he have revived? could we have revived? could you have revived? could they have revived?	could I have been reviving? could you have been reviving? could he have been reviving? could we have been reviving? could you have been reviving? could they have been reviving?

Interro-negative form

Simple form	V-ing form
couldn't I revive? couldn't you revive? couldn't he revive? couldn't we revive? couldn't you revive? couldn't they revive?	couldn't I be reviving? couldn't you be reviving? couldn't he be reviving? couldn't we be reviving? couldn't you be reviving? couldn't they be reviving?
Perfect	V-ing perfect
couldn't I have revived? couldn't you have revived? couldn't he have revived? couldn't we have revived? couldn't you have revived? couldn't they have revived?	couldn't I have been reviving? couldn't you have been reviving? couldn't he have been reviving? couldn't we have been reviving? couldn't you have been reviving? couldn't they have been reviving?