I could overexpand you could overexpand he could overexpand we could overexpand you could overexpand they could overexpand
V-ing form
I could be overexpanding you could be overexpanding he could be overexpanding we could be overexpanding you could be overexpanding they could be overexpanding
Perfect
I could have overexpanded you could have overexpanded he could have overexpanded we could have overexpanded you could have overexpanded they could have overexpanded
V-ing perfect
I could have been overexpanding you could have been overexpanding he could have been overexpanding we could have been overexpanding you could have been overexpanding they could have been overexpanding
Negation
Simple form
I could not overexpand you could not overexpand he could not overexpand we could not overexpand you could not overexpand they could not overexpand
V-ing form
I could not be overexpanding you could not be overexpanding he could not be overexpanding we could not be overexpanding you could not be overexpanding they could not be overexpanding
Perfect
I could not have overexpanded you could not have overexpanded he could not have overexpanded we could not have overexpanded you could not have overexpanded they could not have overexpanded
V-ing perfect
I could not have been overexpanding you could not have been overexpanding he could not have been overexpanding we could not have been overexpanding you could not have been overexpanding they could not have been overexpanding
Interrogative form
Simple form
could I overexpand? could you overexpand? could he overexpand? could we overexpand? could you overexpand? could they overexpand?
V-ing form
could I be overexpanding? could you be overexpanding? could he be overexpanding? could we be overexpanding? could you be overexpanding? could they be overexpanding?
Perfect
could I have overexpanded? could you have overexpanded? could he have overexpanded? could we have overexpanded? could you have overexpanded? could they have overexpanded?
V-ing perfect
could I have been overexpanding? could you have been overexpanding? could he have been overexpanding? could we have been overexpanding? could you have been overexpanding? could they have been overexpanding?
Interro-negative form
Simple form
could I not overexpand? could you not overexpand? could he not overexpand? could we not overexpand? could you not overexpand? could they not overexpand?
V-ing form
could I not be overexpanding? could you not be overexpanding? could he not be overexpanding? could we not be overexpanding? could you not be overexpanding? could they not be overexpanding?
Perfect
could I not have overexpanded? could you not have overexpanded? could he not have overexpanded? could we not have overexpanded? could you not have overexpanded? could they not have overexpanded?
V-ing perfect
could I not have been overexpanding? could you not have been overexpanding? could he not have been overexpanding? could we not have been overexpanding? could you not have been overexpanding? could they not have been overexpanding?