I could exult you could exult he could exult we could exult you could exult they could exult
V-ing form
I could be exulting you could be exulting he could be exulting we could be exulting you could be exulting they could be exulting
Perfect
I could have exulted you could have exulted he 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 he could have been exulting we could have been exulting you could have been exulting they could have been exulting
Negation
Simple form
I couldn't exult you couldn't exult he couldn't exult we couldn't exult you couldn't exult they couldn't exult
V-ing form
I couldn't be exulting you couldn't be exulting he couldn't be exulting we couldn't be exulting you couldn't be exulting they couldn't be exulting
Perfect
I couldn't have exulted you couldn't have exulted he couldn't have exulted we couldn't have exulted you couldn't have exulted they couldn't have exulted
V-ing perfect
I couldn't have been exulting you couldn't have been exulting he couldn't have been exulting we couldn't have been exulting you couldn't have been exulting they couldn't have been exulting
Interrogative form
Simple form
could I exult? could you exult? could he exult? could we exult? could you exult? could they exult?
V-ing form
could I be exulting? could you be exulting? could he be exulting? could we be exulting? could you be exulting? could they be exulting?
Perfect
could I have exulted? could you have exulted? could he 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 he have been exulting? could we have been exulting? could you have been exulting? could they have been exulting?
Interro-negative form
Simple form
couldn't I exult? couldn't you exult? couldn't he exult? couldn't we exult? couldn't you exult? couldn't they exult?
V-ing form
couldn't I be exulting? couldn't you be exulting? couldn't he be exulting? couldn't we be exulting? couldn't you be exulting? couldn't they be exulting?
Perfect
couldn't I have exulted? couldn't you have exulted? couldn't he have exulted? couldn't we have exulted? couldn't you have exulted? couldn't they have exulted?
V-ing perfect
couldn't I have been exulting? couldn't you have been exulting? couldn't he have been exulting? couldn't we have been exulting? couldn't you have been exulting? couldn't they have been exulting?