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 couldn't betray you couldn't betray he couldn't betray we couldn't betray you couldn't betray they couldn't betray
V-ing form
I couldn't be betraying you couldn't be betraying he couldn't be betraying we couldn't be betraying you couldn't be betraying they couldn't be betraying
Perfect
I couldn't have betrayed you couldn't have betrayed he couldn't have betrayed we couldn't have betrayed you couldn't have betrayed they couldn't have betrayed
V-ing perfect
I couldn't have been betraying you couldn't have been betraying he couldn't have been betraying we couldn't have been betraying you couldn't have been betraying they couldn't 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
couldn't I betray? couldn't you betray? couldn't he betray? couldn't we betray? couldn't you betray? couldn't they betray?
V-ing form
couldn't I be betraying? couldn't you be betraying? couldn't he be betraying? couldn't we be betraying? couldn't you be betraying? couldn't they be betraying?
Perfect
couldn't I have betrayed? couldn't you have betrayed? couldn't he have betrayed? couldn't we have betrayed? couldn't you have betrayed? couldn't they have betrayed?
V-ing perfect
couldn't I have been betraying? couldn't you have been betraying? couldn't he have been betraying? couldn't we have been betraying? couldn't you have been betraying? couldn't they have been betraying?