English verb conjugation
COULD NARROW

Regular verb: narrow - narrowed - narrowed

Affirmation

Simple form	V-ing form
I could narrow you could narrow she could narrow we could narrow you could narrow they could narrow	I could be narrowing you could be narrowing she could be narrowing we could be narrowing you could be narrowing they could be narrowing
Perfect	V-ing perfect
I could have narrowed you could have narrowed she could have narrowed we could have narrowed you could have narrowed they could have narrowed	I could have been narrowing you could have been narrowing she could have been narrowing we could have been narrowing you could have been narrowing they could have been narrowing

Negation

Simple form	V-ing form
I could not narrow you could not narrow she could not narrow we could not narrow you could not narrow they could not narrow	I could not be narrowing you could not be narrowing she could not be narrowing we could not be narrowing you could not be narrowing they could not be narrowing
Perfect	V-ing perfect
I could not have narrowed you could not have narrowed she could not have narrowed we could not have narrowed you could not have narrowed they could not have narrowed	I could not have been narrowing you could not have been narrowing she could not have been narrowing we could not have been narrowing you could not have been narrowing they could not have been narrowing

Interrogative form

Simple form	V-ing form
could I narrow? could you narrow? could she narrow? could we narrow? could you narrow? could they narrow?	could I be narrowing? could you be narrowing? could she be narrowing? could we be narrowing? could you be narrowing? could they be narrowing?
Perfect	V-ing perfect
could I have narrowed? could you have narrowed? could she have narrowed? could we have narrowed? could you have narrowed? could they have narrowed?	could I have been narrowing? could you have been narrowing? could she have been narrowing? could we have been narrowing? could you have been narrowing? could they have been narrowing?

Interro-negative form

Simple form	V-ing form
could I not narrow? could you not narrow? could she not narrow? could we not narrow? could you not narrow? could they not narrow?	could I not be narrowing? could you not be narrowing? could she not be narrowing? could we not be narrowing? could you not be narrowing? could they not be narrowing?
Perfect	V-ing perfect
could I not have narrowed? could you not have narrowed? could she not have narrowed? could we not have narrowed? could you not have narrowed? could they not have narrowed?	could I not have been narrowing? could you not have been narrowing? could she not have been narrowing? could we not have been narrowing? could you not have been narrowing? could they not have been narrowing?