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