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