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