I could bung you could bung he could bung we could bung you could bung they could bung
V-ing form
I could be bunging you could be bunging he could be bunging we could be bunging you could be bunging they could be bunging
Perfect
I could have bunged you could have bunged he could have bunged we could have bunged you could have bunged they could have bunged
V-ing perfect
I could have been bunging you could have been bunging he could have been bunging we could have been bunging you could have been bunging they could have been bunging
Negation
Simple form
I could not bung you could not bung he could not bung we could not bung you could not bung they could not bung
V-ing form
I could not be bunging you could not be bunging he could not be bunging we could not be bunging you could not be bunging they could not be bunging
Perfect
I could not have bunged you could not have bunged he could not have bunged we could not have bunged you could not have bunged they could not have bunged
V-ing perfect
I could not have been bunging you could not have been bunging he could not have been bunging we could not have been bunging you could not have been bunging they could not have been bunging
Interrogative form
Simple form
could I bung? could you bung? could he bung? could we bung? could you bung? could they bung?
V-ing form
could I be bunging? could you be bunging? could he be bunging? could we be bunging? could you be bunging? could they be bunging?
Perfect
could I have bunged? could you have bunged? could he have bunged? could we have bunged? could you have bunged? could they have bunged?
V-ing perfect
could I have been bunging? could you have been bunging? could he have been bunging? could we have been bunging? could you have been bunging? could they have been bunging?
Interro-negative form
Simple form
could I not bung? could you not bung? could he not bung? could we not bung? could you not bung? could they not bung?
V-ing form
could I not be bunging? could you not be bunging? could he not be bunging? could we not be bunging? could you not be bunging? could they not be bunging?
Perfect
could I not have bunged? could you not have bunged? could he not have bunged? could we not have bunged? could you not have bunged? could they not have bunged?
V-ing perfect
could I not have been bunging? could you not have been bunging? could he not have been bunging? could we not have been bunging? could you not have been bunging? could they not have been bunging?