I can blabber you can blabber he can blabber we can blabber you can blabber they can blabber
V-ing form
I can be blabbering you can be blabbering he can be blabbering we can be blabbering you can be blabbering they can be blabbering
Perfect
I can have blabbered you can have blabbered he can have blabbered we can have blabbered you can have blabbered they can have blabbered
V-ing perfect
I can have been blabbering you can have been blabbering he can have been blabbering we can have been blabbering you can have been blabbering they can have been blabbering
Negation
Simple form
I cannot blabber you cannot blabber he cannot blabber we cannot blabber you cannot blabber they cannot blabber
V-ing form
I cannot be blabbering you cannot be blabbering he cannot be blabbering we cannot be blabbering you cannot be blabbering they cannot be blabbering
Perfect
I cannot have blabbered you cannot have blabbered he cannot have blabbered we cannot have blabbered you cannot have blabbered they cannot have blabbered
V-ing perfect
I cannot have been blabbering you cannot have been blabbering he cannot have been blabbering we cannot have been blabbering you cannot have been blabbering they cannot have been blabbering
Interrogative form
Simple form
can I blabber? can you blabber? can he blabber? can we blabber? can you blabber? can they blabber?
V-ing form
can I be blabbering? can you be blabbering? can he be blabbering? can we be blabbering? can you be blabbering? can they be blabbering?
Perfect
can I have blabbered? can you have blabbered? can he have blabbered? can we have blabbered? can you have blabbered? can they have blabbered?
V-ing perfect
can I have been blabbering? can you have been blabbering? can he have been blabbering? can we have been blabbering? can you have been blabbering? can they have been blabbering?
Interro-negative form
Simple form
can I not blabber? can you not blabber? can he not blabber? can we not blabber? can you not blabber? can they not blabber?
V-ing form
can I not be blabbering? can you not be blabbering? can he not be blabbering? can we not be blabbering? can you not be blabbering? can they not be blabbering?
Perfect
can I not have blabbered? can you not have blabbered? can he not have blabbered? can we not have blabbered? can you not have blabbered? can they not have blabbered?
V-ing perfect
can I not have been blabbering? can you not have been blabbering? can he not have been blabbering? can we not have been blabbering? can you not have been blabbering? can they not have been blabbering?