English verb conjugation
COULD HIGHLIGHT

Regular verb: highlight - highlighted - highlighted

Affirmation

Simple form	V-ing form
I could highlight you could highlight he could highlight we could highlight you could highlight they could highlight	I could be highlighting you could be highlighting he could be highlighting we could be highlighting you could be highlighting they could be highlighting
Perfect	V-ing perfect
I could have highlighted you could have highlighted he could have highlighted we could have highlighted you could have highlighted they could have highlighted	I could have been highlighting you could have been highlighting he could have been highlighting we could have been highlighting you could have been highlighting they could have been highlighting

Negation

Simple form	V-ing form
I could not highlight you could not highlight he could not highlight we could not highlight you could not highlight they could not highlight	I could not be highlighting you could not be highlighting he could not be highlighting we could not be highlighting you could not be highlighting they could not be highlighting
Perfect	V-ing perfect
I could not have highlighted you could not have highlighted he could not have highlighted we could not have highlighted you could not have highlighted they could not have highlighted	I could not have been highlighting you could not have been highlighting he could not have been highlighting we could not have been highlighting you could not have been highlighting they could not have been highlighting

Interrogative form

Simple form	V-ing form
could I highlight? could you highlight? could he highlight? could we highlight? could you highlight? could they highlight?	could I be highlighting? could you be highlighting? could he be highlighting? could we be highlighting? could you be highlighting? could they be highlighting?
Perfect	V-ing perfect
could I have highlighted? could you have highlighted? could he have highlighted? could we have highlighted? could you have highlighted? could they have highlighted?	could I have been highlighting? could you have been highlighting? could he have been highlighting? could we have been highlighting? could you have been highlighting? could they have been highlighting?

Interro-negative form

Simple form	V-ing form
could I not highlight? could you not highlight? could he not highlight? could we not highlight? could you not highlight? could they not highlight?	could I not be highlighting? could you not be highlighting? could he not be highlighting? could we not be highlighting? could you not be highlighting? could they not be highlighting?
Perfect	V-ing perfect
could I not have highlighted? could you not have highlighted? could he not have highlighted? could we not have highlighted? could you not have highlighted? could they not have highlighted?	could I not have been highlighting? could you not have been highlighting? could he not have been highlighting? could we not have been highlighting? could you not have been highlighting? could they not have been highlighting?