English verb conjugation
COULD REIFY

Regular verb: reify - reified - reified

Affirmation

Simple form	V-ing form
I could reify you could reify he could reify we could reify you could reify they could reify	I could be reifying you could be reifying he could be reifying we could be reifying you could be reifying they could be reifying
Perfect	V-ing perfect
I could have reified you could have reified he could have reified we could have reified you could have reified they could have reified	I could have been reifying you could have been reifying he could have been reifying we could have been reifying you could have been reifying they could have been reifying

Negation

Simple form	V-ing form
I couldn't reify you couldn't reify he couldn't reify we couldn't reify you couldn't reify they couldn't reify	I couldn't be reifying you couldn't be reifying he couldn't be reifying we couldn't be reifying you couldn't be reifying they couldn't be reifying
Perfect	V-ing perfect
I couldn't have reified you couldn't have reified he couldn't have reified we couldn't have reified you couldn't have reified they couldn't have reified	I couldn't have been reifying you couldn't have been reifying he couldn't have been reifying we couldn't have been reifying you couldn't have been reifying they couldn't have been reifying

Interrogative form

Simple form	V-ing form
could I reify? could you reify? could he reify? could we reify? could you reify? could they reify?	could I be reifying? could you be reifying? could he be reifying? could we be reifying? could you be reifying? could they be reifying?
Perfect	V-ing perfect
could I have reified? could you have reified? could he have reified? could we have reified? could you have reified? could they have reified?	could I have been reifying? could you have been reifying? could he have been reifying? could we have been reifying? could you have been reifying? could they have been reifying?

Interro-negative form

Simple form	V-ing form
couldn't I reify? couldn't you reify? couldn't he reify? couldn't we reify? couldn't you reify? couldn't they reify?	couldn't I be reifying? couldn't you be reifying? couldn't he be reifying? couldn't we be reifying? couldn't you be reifying? couldn't they be reifying?
Perfect	V-ing perfect
couldn't I have reified? couldn't you have reified? couldn't he have reified? couldn't we have reified? couldn't you have reified? couldn't they have reified?	couldn't I have been reifying? couldn't you have been reifying? couldn't he have been reifying? couldn't we have been reifying? couldn't you have been reifying? couldn't they have been reifying?