English verb conjugation
COULD ADUMBRATE

Regular verb: adumbrate - adumbrated - adumbrated

Affirmation

Simple form	V-ing form
I could adumbrate you could adumbrate he could adumbrate we could adumbrate you could adumbrate they could adumbrate	I could be adumbrating you could be adumbrating he could be adumbrating we could be adumbrating you could be adumbrating they could be adumbrating
Perfect	V-ing perfect
I could have adumbrated you could have adumbrated he could have adumbrated we could have adumbrated you could have adumbrated they could have adumbrated	I could have been adumbrating you could have been adumbrating he could have been adumbrating we could have been adumbrating you could have been adumbrating they could have been adumbrating

Negation

Simple form	V-ing form
I could not adumbrate you could not adumbrate he could not adumbrate we could not adumbrate you could not adumbrate they could not adumbrate	I could not be adumbrating you could not be adumbrating he could not be adumbrating we could not be adumbrating you could not be adumbrating they could not be adumbrating
Perfect	V-ing perfect
I could not have adumbrated you could not have adumbrated he could not have adumbrated we could not have adumbrated you could not have adumbrated they could not have adumbrated	I could not have been adumbrating you could not have been adumbrating he could not have been adumbrating we could not have been adumbrating you could not have been adumbrating they could not have been adumbrating

Interrogative form

Simple form	V-ing form
could I adumbrate? could you adumbrate? could he adumbrate? could we adumbrate? could you adumbrate? could they adumbrate?	could I be adumbrating? could you be adumbrating? could he be adumbrating? could we be adumbrating? could you be adumbrating? could they be adumbrating?
Perfect	V-ing perfect
could I have adumbrated? could you have adumbrated? could he have adumbrated? could we have adumbrated? could you have adumbrated? could they have adumbrated?	could I have been adumbrating? could you have been adumbrating? could he have been adumbrating? could we have been adumbrating? could you have been adumbrating? could they have been adumbrating?

Interro-negative form

Simple form	V-ing form
could I not adumbrate? could you not adumbrate? could he not adumbrate? could we not adumbrate? could you not adumbrate? could they not adumbrate?	could I not be adumbrating? could you not be adumbrating? could he not be adumbrating? could we not be adumbrating? could you not be adumbrating? could they not be adumbrating?
Perfect	V-ing perfect
could I not have adumbrated? could you not have adumbrated? could he not have adumbrated? could we not have adumbrated? could you not have adumbrated? could they not have adumbrated?	could I not have been adumbrating? could you not have been adumbrating? could he not have been adumbrating? could we not have been adumbrating? could you not have been adumbrating? could they not have been adumbrating?