English verb conjugation
COULD REVALIDATE

Regular verb: revalidate - revalidated - revalidated

Affirmation

Simple form	V-ing form
I could revalidate you could revalidate he could revalidate we could revalidate you could revalidate they could revalidate	I could be revalidating you could be revalidating he could be revalidating we could be revalidating you could be revalidating they could be revalidating
Perfect	V-ing perfect
I could have revalidated you could have revalidated he could have revalidated we could have revalidated you could have revalidated they could have revalidated	I could have been revalidating you could have been revalidating he could have been revalidating we could have been revalidating you could have been revalidating they could have been revalidating

Negation

Simple form	V-ing form
I could not revalidate you could not revalidate he could not revalidate we could not revalidate you could not revalidate they could not revalidate	I could not be revalidating you could not be revalidating he could not be revalidating we could not be revalidating you could not be revalidating they could not be revalidating
Perfect	V-ing perfect
I could not have revalidated you could not have revalidated he could not have revalidated we could not have revalidated you could not have revalidated they could not have revalidated	I could not have been revalidating you could not have been revalidating he could not have been revalidating we could not have been revalidating you could not have been revalidating they could not have been revalidating

Interrogative form

Simple form	V-ing form
could I revalidate? could you revalidate? could he revalidate? could we revalidate? could you revalidate? could they revalidate?	could I be revalidating? could you be revalidating? could he be revalidating? could we be revalidating? could you be revalidating? could they be revalidating?
Perfect	V-ing perfect
could I have revalidated? could you have revalidated? could he have revalidated? could we have revalidated? could you have revalidated? could they have revalidated?	could I have been revalidating? could you have been revalidating? could he have been revalidating? could we have been revalidating? could you have been revalidating? could they have been revalidating?

Interro-negative form

Simple form	V-ing form
could I not revalidate? could you not revalidate? could he not revalidate? could we not revalidate? could you not revalidate? could they not revalidate?	could I not be revalidating? could you not be revalidating? could he not be revalidating? could we not be revalidating? could you not be revalidating? could they not be revalidating?
Perfect	V-ing perfect
could I not have revalidated? could you not have revalidated? could he not have revalidated? could we not have revalidated? could you not have revalidated? could they not have revalidated?	could I not have been revalidating? could you not have been revalidating? could he not have been revalidating? could we not have been revalidating? could you not have been revalidating? could they not have been revalidating?