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