English verb conjugation
COULD DISPLACE

Regular verb: displace - displaced - displaced

Affirmation

Simple form	V-ing form
I could displace you could displace he could displace we could displace you could displace they could displace	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	V-ing 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	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	V-ing form
I couldn't displace you couldn't displace he couldn't displace we couldn't displace you couldn't displace they couldn't displace	I couldn't be displacing you couldn't be displacing he couldn't be displacing we couldn't be displacing you couldn't be displacing they couldn't be displacing
Perfect	V-ing perfect
I couldn't have displaced you couldn't have displaced he couldn't have displaced we couldn't have displaced you couldn't have displaced they couldn't have displaced	I couldn't have been displacing you couldn't have been displacing he couldn't have been displacing we couldn't have been displacing you couldn't have been displacing they couldn't have been displacing

Interrogative form

Simple form	V-ing form
could I displace? could you displace? could he displace? could we displace? could you displace? could they displace?	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	V-ing 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?	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	V-ing form
couldn't I displace? couldn't you displace? couldn't he displace? couldn't we displace? couldn't you displace? couldn't they displace?	couldn't I be displacing? couldn't you be displacing? couldn't he be displacing? couldn't we be displacing? couldn't you be displacing? couldn't they be displacing?
Perfect	V-ing perfect
couldn't I have displaced? couldn't you have displaced? couldn't he have displaced? couldn't we have displaced? couldn't you have displaced? couldn't they have displaced?	couldn't I have been displacing? couldn't you have been displacing? couldn't he have been displacing? couldn't we have been displacing? couldn't you have been displacing? couldn't they have been displacing?