I could displace you could displace he could displace we could displace you could displace they could displace
V-ing form
I could be displacing you could be displacing he could be displacing we could be displacing you could be displacing they could be displacing
Perfect
I could have displaced you could have displaced he could have displaced we could have displaced you could have displaced they could have displaced
V-ing perfect
I could have been displacing you could have been displacing he could have been displacing we could have been displacing you could have been displacing they could have been displacing
Negation
Simple form
I could not displace you could not displace he could not displace we could not displace you could not displace they could not displace
V-ing form
I could not be displacing you could not be displacing he could not be displacing we could not be displacing you could not be displacing they could not be displacing
Perfect
I could not have displaced you could not have displaced he could not have displaced we could not have displaced you could not have displaced they could not have displaced
V-ing perfect
I could not have been displacing you could not have been displacing he could not have been displacing we could not have been displacing you could not have been displacing they could not have been displacing
Interrogative form
Simple form
could I displace? could you displace? could he displace? could we displace? could you displace? could they displace?
V-ing form
could I be displacing? could you be displacing? could he be displacing? could we be displacing? could you be displacing? could they be displacing?
Perfect
could I have displaced? could you have displaced? could he have displaced? could we have displaced? could you have displaced? could they have displaced?
V-ing perfect
could I have been displacing? could you have been displacing? could he have been displacing? could we have been displacing? could you have been displacing? could they have been displacing?
Interro-negative form
Simple form
could I not displace? could you not displace? could he not displace? could we not displace? could you not displace? could they not displace?
V-ing form
could I not be displacing? could you not be displacing? could he not be displacing? could we not be displacing? could you not be displacing? could they not be displacing?
Perfect
could I not have displaced? could you not have displaced? could he not have displaced? could we not have displaced? could you not have displaced? could they not have displaced?
V-ing perfect
could I not have been displacing? could you not have been displacing? could he not have been displacing? could we not have been displacing? could you not have been displacing? could they not have been displacing?