I could denigrate you could denigrate he could denigrate we could denigrate you could denigrate they could denigrate
V-ing form
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
I could have denigrated you could have denigrated he could have denigrated we could have denigrated you could have denigrated they could have denigrated
V-ing perfect
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
I couldn't denigrate you couldn't denigrate he couldn't denigrate we couldn't denigrate you couldn't denigrate they couldn't denigrate
V-ing form
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
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
V-ing perfect
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
could I denigrate? could you denigrate? could he denigrate? could we denigrate? could you denigrate? could they denigrate?
V-ing form
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
could I have denigrated? could you have denigrated? could he have denigrated? could we have denigrated? could you have denigrated? could they have denigrated?
V-ing perfect
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
couldn't I denigrate? couldn't you denigrate? couldn't he denigrate? couldn't we denigrate? couldn't you denigrate? couldn't they denigrate?
V-ing form
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
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?
V-ing perfect
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?