English verb conjugation
COULD PRESCREEN

Regular verb: prescreen - prescreened - prescreened

Affirmation

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