could prescreen
Regular verb: prescreen - prescreened- prescreened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prescreen
you could prescreen
she could prescreen
we could prescreen
you could prescreen
they could prescreen 	I could be prescreening
you could be prescreening
she could be prescreening
we could be prescreening
you could be prescreening
they could be prescreening	I could have prescreened
you could have prescreened
she could have prescreened
we could have prescreened
you could have prescreened
they could have prescreened	I could have been prescreening
you could have been prescreening
she could have been prescreening
we could have been prescreening
you could have been prescreening
they could have been prescreening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prescreen
you couldn't prescreen
she couldn't prescreen
we couldn't prescreen
you couldn't prescreen
they couldn't prescreen 	I couldn't be prescreening
you couldn't be prescreening
she couldn't be prescreening
we couldn't be prescreening
you couldn't be prescreening
they couldn't be prescreening	I couldn't have prescreened
you couldn't have prescreened
she couldn't have prescreened
we couldn't have prescreened
you couldn't have prescreened
they couldn't have prescreened	I couldn't have been prescreening
you couldn't have been prescreening
she couldn't have been prescreening
we couldn't have been prescreening
you couldn't have been prescreening
they couldn't have been prescreening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prescreen?
could you prescreen?
could she prescreen?
could we prescreen?
could you prescreen?
could they prescreen? 	could I be prescreening?
could you be prescreening?
could she be prescreening?
could we be prescreening?
could you be prescreening?
could they be prescreening? 	could I have prescreened?
could you have prescreened?
could she have prescreened?
could we have prescreened?
could you have prescreened?
could they have prescreened? 	could I have been prescreening?
could you have been prescreening?
could she have been prescreening?
could we have been prescreening?
could you have been prescreening?
could they have been prescreening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prescreen?
couldn't you prescreen?
couldn't she prescreen?
couldn't we prescreen?
couldn't you prescreen?
couldn't they prescreen? 	couldn't I be prescreening?
couldn't you be prescreening?
couldn't she be prescreening?
couldn't we be prescreening?
couldn't you be prescreening?
couldn't they be prescreening? 	couldn't I have prescreened?
couldn't you have prescreened?
couldn't she have prescreened?
couldn't we have prescreened?
couldn't you have prescreened?
couldn't they have prescreened? 	couldn't I have been prescreening?
couldn't you have been prescreening?
couldn't she have been prescreening?
couldn't we have been prescreening?
couldn't you have been prescreening?
couldn't they have been prescreening?