English verb conjugation
COULD DENIGRATE

Regular verb: denigrate - denigrated - denigrated

Affirmation

Simple form	V-ing form
I could denigrate you could denigrate he could denigrate we could denigrate you could denigrate they could denigrate	I could be denigrating you could be denigrating he could be denigrating we could be denigrating you could be denigrating they could be denigrating
Perfect	V-ing perfect
I could have denigrated you could have denigrated he could have denigrated we could have denigrated you could have denigrated they could have denigrated	I could have been denigrating you could have been denigrating he could have been denigrating we could have been denigrating you could have been denigrating they could have been denigrating

Negation

Simple form	V-ing form
I couldn't denigrate you couldn't denigrate he couldn't denigrate we couldn't denigrate you couldn't denigrate they couldn't denigrate	I couldn't be denigrating you couldn't be denigrating he couldn't be denigrating we couldn't be denigrating you couldn't be denigrating they couldn't be denigrating
Perfect	V-ing perfect
I couldn't have denigrated you couldn't have denigrated he couldn't have denigrated we couldn't have denigrated you couldn't have denigrated they couldn't have denigrated	I couldn't have been denigrating you couldn't have been denigrating he couldn't have been denigrating we couldn't have been denigrating you couldn't have been denigrating they couldn't have been denigrating

Interrogative form

Simple form	V-ing form
could I denigrate? could you denigrate? could he denigrate? could we denigrate? could you denigrate? could they denigrate?	could I be denigrating? could you be denigrating? could he be denigrating? could we be denigrating? could you be denigrating? could they be denigrating?
Perfect	V-ing perfect
could I have denigrated? could you have denigrated? could he have denigrated? could we have denigrated? could you have denigrated? could they have denigrated?	could I have been denigrating? could you have been denigrating? could he have been denigrating? could we have been denigrating? could you have been denigrating? could they have been denigrating?

Interro-negative form

Simple form	V-ing form
couldn't I denigrate? couldn't you denigrate? couldn't he denigrate? couldn't we denigrate? couldn't you denigrate? couldn't they denigrate?	couldn't I be denigrating? couldn't you be denigrating? couldn't he be denigrating? couldn't we be denigrating? couldn't you be denigrating? couldn't they be denigrating?
Perfect	V-ing perfect
couldn't I have denigrated? couldn't you have denigrated? couldn't he have denigrated? couldn't we have denigrated? couldn't you have denigrated? couldn't they have denigrated?	couldn't I have been denigrating? couldn't you have been denigrating? couldn't he have been denigrating? couldn't we have been denigrating? couldn't you have been denigrating? couldn't they have been denigrating?