I could betray you could betray he could betray we could betray you could betray they could betray
V-ing form
I could be betraying you could be betraying he could be betraying we could be betraying you could be betraying they could be betraying
Perfect
I could have betrayed you could have betrayed he could have betrayed we could have betrayed you could have betrayed they could have betrayed
V-ing perfect
I could have been betraying you could have been betraying he could have been betraying we could have been betraying you could have been betraying they could have been betraying
Negation
Simple form
I could not betray you could not betray he could not betray we could not betray you could not betray they could not betray
V-ing form
I could not be betraying you could not be betraying he could not be betraying we could not be betraying you could not be betraying they could not be betraying
Perfect
I could not have betrayed you could not have betrayed he could not have betrayed we could not have betrayed you could not have betrayed they could not have betrayed
V-ing perfect
I could not have been betraying you could not have been betraying he could not have been betraying we could not have been betraying you could not have been betraying they could not have been betraying
Interrogative form
Simple form
could I betray? could you betray? could he betray? could we betray? could you betray? could they betray?
V-ing form
could I be betraying? could you be betraying? could he be betraying? could we be betraying? could you be betraying? could they be betraying?
Perfect
could I have betrayed? could you have betrayed? could he have betrayed? could we have betrayed? could you have betrayed? could they have betrayed?
V-ing perfect
could I have been betraying? could you have been betraying? could he have been betraying? could we have been betraying? could you have been betraying? could they have been betraying?
Interro-negative form
Simple form
could I not betray? could you not betray? could he not betray? could we not betray? could you not betray? could they not betray?
V-ing form
could I not be betraying? could you not be betraying? could he not be betraying? could we not be betraying? could you not be betraying? could they not be betraying?
Perfect
could I not have betrayed? could you not have betrayed? could he not have betrayed? could we not have betrayed? could you not have betrayed? could they not have betrayed?
V-ing perfect
could I not have been betraying? could you not have been betraying? could he not have been betraying? could we not have been betraying? could you not have been betraying? could they not have been betraying?