English verb conjugation
COULD REVIVIFY

Regular verb: revivify - revivified - revivified

Affirmation

Simple form	V-ing form
I could revivify you could revivify he could revivify we could revivify you could revivify they could revivify	I could be revivifying you could be revivifying he could be revivifying we could be revivifying you could be revivifying they could be revivifying
Perfect	V-ing perfect
I could have revivified you could have revivified he could have revivified we could have revivified you could have revivified they could have revivified	I could have been revivifying you could have been revivifying he could have been revivifying we could have been revivifying you could have been revivifying they could have been revivifying

Negation

Simple form	V-ing form
I couldn't revivify you couldn't revivify he couldn't revivify we couldn't revivify you couldn't revivify they couldn't revivify	I couldn't be revivifying you couldn't be revivifying he couldn't be revivifying we couldn't be revivifying you couldn't be revivifying they couldn't be revivifying
Perfect	V-ing perfect
I couldn't have revivified you couldn't have revivified he couldn't have revivified we couldn't have revivified you couldn't have revivified they couldn't have revivified	I couldn't have been revivifying you couldn't have been revivifying he couldn't have been revivifying we couldn't have been revivifying you couldn't have been revivifying they couldn't have been revivifying

Interrogative form

Simple form	V-ing form
could I revivify? could you revivify? could he revivify? could we revivify? could you revivify? could they revivify?	could I be revivifying? could you be revivifying? could he be revivifying? could we be revivifying? could you be revivifying? could they be revivifying?
Perfect	V-ing perfect
could I have revivified? could you have revivified? could he have revivified? could we have revivified? could you have revivified? could they have revivified?	could I have been revivifying? could you have been revivifying? could he have been revivifying? could we have been revivifying? could you have been revivifying? could they have been revivifying?

Interro-negative form

Simple form	V-ing form
couldn't I revivify? couldn't you revivify? couldn't he revivify? couldn't we revivify? couldn't you revivify? couldn't they revivify?	couldn't I be revivifying? couldn't you be revivifying? couldn't he be revivifying? couldn't we be revivifying? couldn't you be revivifying? couldn't they be revivifying?
Perfect	V-ing perfect
couldn't I have revivified? couldn't you have revivified? couldn't he have revivified? couldn't we have revivified? couldn't you have revivified? couldn't they have revivified?	couldn't I have been revivifying? couldn't you have been revivifying? couldn't he have been revivifying? couldn't we have been revivifying? couldn't you have been revivifying? couldn't they have been revivifying?