should shorten
Regular verb: shorten - shortened- shortened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should shorten
you should shorten
he should shorten
we should shorten
you should shorten
they should shorten 	I should be shortening
you should be shortening
he should be shortening
we should be shortening
you should be shortening
they should be shortening	I should have shortened
you should have shortened
he should have shortened
we should have shortened
you should have shortened
they should have shortened	I should have been shortening
you should have been shortening
he should have been shortening
we should have been shortening
you should have been shortening
they should have been shortening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not shorten
you should not shorten
he should not shorten
we should not shorten
you should not shorten
they should not shorten 	I should not be shortening
you should not be shortening
he should not be shortening
we should not be shortening
you should not be shortening
they should not be shortening	I should not have shortened
you should not have shortened
he should not have shortened
we should not have shortened
you should not have shortened
they should not have shortened	I should not have been shortening
you should not have been shortening
he should not have been shortening
we should not have been shortening
you should not have been shortening
they should not have been shortening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I shorten?
should you shorten?
should he shorten?
should we shorten?
should you shorten?
should they shorten? 	should I be shortening?
should you be shortening?
should he be shortening?
should we be shortening?
should you be shortening?
should they be shortening? 	should I have shortened?
should you have shortened?
should he have shortened?
should we have shortened?
should you have shortened?
should they have shortened? 	should I have been shortening?
should you have been shortening?
should he have been shortening?
should we have been shortening?
should you have been shortening?
should they have been shortening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not shorten?
should you not shorten?
should he not shorten?
should we not shorten?
should you not shorten?
should they not shorten? 	should I not be shortening?
should you not be shortening?
should he not be shortening?
should we not be shortening?
should you not be shortening?
should they not be shortening? 	should I not have shortened?
should you not have shortened?
should he not have shortened?
should we not have shortened?
should you not have shortened?
should they not have shortened? 	should I not have been shortening?
should you not have been shortening?
should he not have been shortening?
should we not have been shortening?
should you not have been shortening?
should they not have been shortening?