I could rap you could rap she could rap we could rap you could rap they could rap
V-ing form
I could be rapping you could be rapping she could be rapping we could be rapping you could be rapping they could be rapping
Perfect
I could have rapped you could have rapped she could have rapped we could have rapped you could have rapped they could have rapped
V-ing perfect
I could have been rapping you could have been rapping she could have been rapping we could have been rapping you could have been rapping they could have been rapping
Negation
Simple form
I couldn't rap you couldn't rap she couldn't rap we couldn't rap you couldn't rap they couldn't rap
V-ing form
I couldn't be rapping you couldn't be rapping she couldn't be rapping we couldn't be rapping you couldn't be rapping they couldn't be rapping
Perfect
I couldn't have rapped you couldn't have rapped she couldn't have rapped we couldn't have rapped you couldn't have rapped they couldn't have rapped
V-ing perfect
I couldn't have been rapping you couldn't have been rapping she couldn't have been rapping we couldn't have been rapping you couldn't have been rapping they couldn't have been rapping
Interrogative form
Simple form
could I rap? could you rap? could she rap? could we rap? could you rap? could they rap?
V-ing form
could I be rapping? could you be rapping? could she be rapping? could we be rapping? could you be rapping? could they be rapping?
Perfect
could I have rapped? could you have rapped? could she have rapped? could we have rapped? could you have rapped? could they have rapped?
V-ing perfect
could I have been rapping? could you have been rapping? could she have been rapping? could we have been rapping? could you have been rapping? could they have been rapping?
Interro-negative form
Simple form
couldn't I rap? couldn't you rap? couldn't she rap? couldn't we rap? couldn't you rap? couldn't they rap?
V-ing form
couldn't I be rapping? couldn't you be rapping? couldn't she be rapping? couldn't we be rapping? couldn't you be rapping? couldn't they be rapping?
Perfect
couldn't I have rapped? couldn't you have rapped? couldn't she have rapped? couldn't we have rapped? couldn't you have rapped? couldn't they have rapped?
V-ing perfect
couldn't I have been rapping? couldn't you have been rapping? couldn't she have been rapping? couldn't we have been rapping? couldn't you have been rapping? couldn't they have been rapping?