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 could not harangue you could not harangue he could not harangue we could not harangue you could not harangue they could not harangue
V-ing form
I could not be haranguing you could not be haranguing he could not be haranguing we could not be haranguing you could not be haranguing they could not be haranguing
Perfect
I could not have harangued you could not have harangued he could not have harangued we could not have harangued you could not have harangued they could not have harangued
V-ing perfect
I could not have been haranguing you could not have been haranguing he could not have been haranguing we could not have been haranguing you could not have been haranguing they could not 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
could I not harangue? could you not harangue? could he not harangue? could we not harangue? could you not harangue? could they not harangue?
V-ing form
could I not be haranguing? could you not be haranguing? could he not be haranguing? could we not be haranguing? could you not be haranguing? could they not be haranguing?
Perfect
could I not have harangued? could you not have harangued? could he not have harangued? could we not have harangued? could you not have harangued? could they not have harangued?
V-ing perfect
could I not have been haranguing? could you not have been haranguing? could he not have been haranguing? could we not have been haranguing? could you not have been haranguing? could they not have been haranguing?