should narrow
Regular verb: narrow - narrowed- narrowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should narrow
you should narrow
he should narrow
we should narrow
you should narrow
they should narrow 	I should be narrowing
you should be narrowing
he should be narrowing
we should be narrowing
you should be narrowing
they should be narrowing	I should have narrowed
you should have narrowed
he should have narrowed
we should have narrowed
you should have narrowed
they should have narrowed	I should have been narrowing
you should have been narrowing
he should have been narrowing
we should have been narrowing
you should have been narrowing
they should have been narrowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not narrow
you should not narrow
he should not narrow
we should not narrow
you should not narrow
they should not narrow 	I should not be narrowing
you should not be narrowing
he should not be narrowing
we should not be narrowing
you should not be narrowing
they should not be narrowing	I should not have narrowed
you should not have narrowed
he should not have narrowed
we should not have narrowed
you should not have narrowed
they should not have narrowed	I should not have been narrowing
you should not have been narrowing
he should not have been narrowing
we should not have been narrowing
you should not have been narrowing
they should not have been narrowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I narrow?
should you narrow?
should he narrow?
should we narrow?
should you narrow?
should they narrow? 	should I be narrowing?
should you be narrowing?
should he be narrowing?
should we be narrowing?
should you be narrowing?
should they be narrowing? 	should I have narrowed?
should you have narrowed?
should he have narrowed?
should we have narrowed?
should you have narrowed?
should they have narrowed? 	should I have been narrowing?
should you have been narrowing?
should he have been narrowing?
should we have been narrowing?
should you have been narrowing?
should they have been narrowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not narrow?
should you not narrow?
should he not narrow?
should we not narrow?
should you not narrow?
should they not narrow? 	should I not be narrowing?
should you not be narrowing?
should he not be narrowing?
should we not be narrowing?
should you not be narrowing?
should they not be narrowing? 	should I not have narrowed?
should you not have narrowed?
should he not have narrowed?
should we not have narrowed?
should you not have narrowed?
should they not have narrowed? 	should I not have been narrowing?
should you not have been narrowing?
should he not have been narrowing?
should we not have been narrowing?
should you not have been narrowing?
should they not have been narrowing?