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