I could exult you could exult she could exult we could exult you could exult they could exult
V-ing form
I could be exulting you could be exulting she could be exulting we could be exulting you could be exulting they could be exulting
Perfect
I could have exulted you could have exulted she could have exulted we could have exulted you could have exulted they could have exulted
V-ing perfect
I could have been exulting you could have been exulting she could have been exulting we could have been exulting you could have been exulting they could have been exulting
Negation
Simple form
I could not exult you could not exult she could not exult we could not exult you could not exult they could not exult
V-ing form
I could not be exulting you could not be exulting she could not be exulting we could not be exulting you could not be exulting they could not be exulting
Perfect
I could not have exulted you could not have exulted she could not have exulted we could not have exulted you could not have exulted they could not have exulted
V-ing perfect
I could not have been exulting you could not have been exulting she could not have been exulting we could not have been exulting you could not have been exulting they could not have been exulting
Interrogative form
Simple form
could I exult? could you exult? could she exult? could we exult? could you exult? could they exult?
V-ing form
could I be exulting? could you be exulting? could she be exulting? could we be exulting? could you be exulting? could they be exulting?
Perfect
could I have exulted? could you have exulted? could she have exulted? could we have exulted? could you have exulted? could they have exulted?
V-ing perfect
could I have been exulting? could you have been exulting? could she have been exulting? could we have been exulting? could you have been exulting? could they have been exulting?
Interro-negative form
Simple form
could I not exult? could you not exult? could she not exult? could we not exult? could you not exult? could they not exult?
V-ing form
could I not be exulting? could you not be exulting? could she not be exulting? could we not be exulting? could you not be exulting? could they not be exulting?
Perfect
could I not have exulted? could you not have exulted? could she not have exulted? could we not have exulted? could you not have exulted? could they not have exulted?
V-ing perfect
could I not have been exulting? could you not have been exulting? could she not have been exulting? could we not have been exulting? could you not have been exulting? could they not have been exulting?