I could barbeque you could barbeque she could barbeque we could barbeque you could barbeque they could barbeque
V-ing form
I could be barbequing you could be barbequing she could be barbequing we could be barbequing you could be barbequing they could be barbequing
Perfect
I could have barbequed you could have barbequed she could have barbequed we could have barbequed you could have barbequed they could have barbequed
V-ing perfect
I could have been barbequing you could have been barbequing she could have been barbequing we could have been barbequing you could have been barbequing they could have been barbequing
Negation
Simple form
I could not barbeque you could not barbeque she could not barbeque we could not barbeque you could not barbeque they could not barbeque
V-ing form
I could not be barbequing you could not be barbequing she could not be barbequing we could not be barbequing you could not be barbequing they could not be barbequing
Perfect
I could not have barbequed you could not have barbequed she could not have barbequed we could not have barbequed you could not have barbequed they could not have barbequed
V-ing perfect
I could not have been barbequing you could not have been barbequing she could not have been barbequing we could not have been barbequing you could not have been barbequing they could not have been barbequing
Interrogative form
Simple form
could I barbeque? could you barbeque? could she barbeque? could we barbeque? could you barbeque? could they barbeque?
V-ing form
could I be barbequing? could you be barbequing? could she be barbequing? could we be barbequing? could you be barbequing? could they be barbequing?
Perfect
could I have barbequed? could you have barbequed? could she have barbequed? could we have barbequed? could you have barbequed? could they have barbequed?
V-ing perfect
could I have been barbequing? could you have been barbequing? could she have been barbequing? could we have been barbequing? could you have been barbequing? could they have been barbequing?
Interro-negative form
Simple form
could I not barbeque? could you not barbeque? could she not barbeque? could we not barbeque? could you not barbeque? could they not barbeque?
V-ing form
could I not be barbequing? could you not be barbequing? could she not be barbequing? could we not be barbequing? could you not be barbequing? could they not be barbequing?
Perfect
could I not have barbequed? could you not have barbequed? could she not have barbequed? could we not have barbequed? could you not have barbequed? could they not have barbequed?
V-ing perfect
could I not have been barbequing? could you not have been barbequing? could she not have been barbequing? could we not have been barbequing? could you not have been barbequing? could they not have been barbequing?