could displace
Regular verb: displace - displaced- displaced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?