English verb conjugation
COULD VIVIFY

Regular verb: vivify - vivified - vivified

Affirmation

Simple form	V-ing form
I could vivify you could vivify he could vivify we could vivify you could vivify they could vivify	I could be vivifying you could be vivifying he could be vivifying we could be vivifying you could be vivifying they could be vivifying
Perfect	V-ing perfect
I could have vivified you could have vivified he could have vivified we could have vivified you could have vivified they could have vivified	I could have been vivifying you could have been vivifying he could have been vivifying we could have been vivifying you could have been vivifying they could have been vivifying

Negation

Simple form	V-ing form
I couldn't vivify you couldn't vivify he couldn't vivify we couldn't vivify you couldn't vivify they couldn't vivify	I couldn't be vivifying you couldn't be vivifying he couldn't be vivifying we couldn't be vivifying you couldn't be vivifying they couldn't be vivifying
Perfect	V-ing perfect
I couldn't have vivified you couldn't have vivified he couldn't have vivified we couldn't have vivified you couldn't have vivified they couldn't have vivified	I couldn't have been vivifying you couldn't have been vivifying he couldn't have been vivifying we couldn't have been vivifying you couldn't have been vivifying they couldn't have been vivifying

Interrogative form

Simple form	V-ing form
could I vivify? could you vivify? could he vivify? could we vivify? could you vivify? could they vivify?	could I be vivifying? could you be vivifying? could he be vivifying? could we be vivifying? could you be vivifying? could they be vivifying?
Perfect	V-ing perfect
could I have vivified? could you have vivified? could he have vivified? could we have vivified? could you have vivified? could they have vivified?	could I have been vivifying? could you have been vivifying? could he have been vivifying? could we have been vivifying? could you have been vivifying? could they have been vivifying?

Interro-negative form

Simple form	V-ing form
couldn't I vivify? couldn't you vivify? couldn't he vivify? couldn't we vivify? couldn't you vivify? couldn't they vivify?	couldn't I be vivifying? couldn't you be vivifying? couldn't he be vivifying? couldn't we be vivifying? couldn't you be vivifying? couldn't they be vivifying?
Perfect	V-ing perfect
couldn't I have vivified? couldn't you have vivified? couldn't he have vivified? couldn't we have vivified? couldn't you have vivified? couldn't they have vivified?	couldn't I have been vivifying? couldn't you have been vivifying? couldn't he have been vivifying? couldn't we have been vivifying? couldn't you have been vivifying? couldn't they have been vivifying?