I could perpetrate you could perpetrate he could perpetrate we could perpetrate you could perpetrate they could perpetrate
V-ing form
I could be perpetrating you could be perpetrating he could be perpetrating we could be perpetrating you could be perpetrating they could be perpetrating
Perfect
I could have perpetrated you could have perpetrated he could have perpetrated we could have perpetrated you could have perpetrated they could have perpetrated
V-ing perfect
I could have been perpetrating you could have been perpetrating he could have been perpetrating we could have been perpetrating you could have been perpetrating they could have been perpetrating
Negation
Simple form
I could not perpetrate you could not perpetrate he could not perpetrate we could not perpetrate you could not perpetrate they could not perpetrate
V-ing form
I could not be perpetrating you could not be perpetrating he could not be perpetrating we could not be perpetrating you could not be perpetrating they could not be perpetrating
Perfect
I could not have perpetrated you could not have perpetrated he could not have perpetrated we could not have perpetrated you could not have perpetrated they could not have perpetrated
V-ing perfect
I could not have been perpetrating you could not have been perpetrating he could not have been perpetrating we could not have been perpetrating you could not have been perpetrating they could not have been perpetrating
Interrogative form
Simple form
could I perpetrate? could you perpetrate? could he perpetrate? could we perpetrate? could you perpetrate? could they perpetrate?
V-ing form
could I be perpetrating? could you be perpetrating? could he be perpetrating? could we be perpetrating? could you be perpetrating? could they be perpetrating?
Perfect
could I have perpetrated? could you have perpetrated? could he have perpetrated? could we have perpetrated? could you have perpetrated? could they have perpetrated?
V-ing perfect
could I have been perpetrating? could you have been perpetrating? could he have been perpetrating? could we have been perpetrating? could you have been perpetrating? could they have been perpetrating?
Interro-negative form
Simple form
could I not perpetrate? could you not perpetrate? could he not perpetrate? could we not perpetrate? could you not perpetrate? could they not perpetrate?
V-ing form
could I not be perpetrating? could you not be perpetrating? could he not be perpetrating? could we not be perpetrating? could you not be perpetrating? could they not be perpetrating?
Perfect
could I not have perpetrated? could you not have perpetrated? could he not have perpetrated? could we not have perpetrated? could you not have perpetrated? could they not have perpetrated?
V-ing perfect
could I not have been perpetrating? could you not have been perpetrating? could he not have been perpetrating? could we not have been perpetrating? could you not have been perpetrating? could they not have been perpetrating?