I should barn you should barn she should barn we should barn you should barn they should barn
V-ing form
I should be barning you should be barning she should be barning we should be barning you should be barning they should be barning
Perfect
I should have barned you should have barned she should have barned we should have barned you should have barned they should have barned
V-ing perfect
I should have been barning you should have been barning she should have been barning we should have been barning you should have been barning they should have been barning
Negation
Simple form
I should not barn you should not barn she should not barn we should not barn you should not barn they should not barn
V-ing form
I should not be barning you should not be barning she should not be barning we should not be barning you should not be barning they should not be barning
Perfect
I should not have barned you should not have barned she should not have barned we should not have barned you should not have barned they should not have barned
V-ing perfect
I should not have been barning you should not have been barning she should not have been barning we should not have been barning you should not have been barning they should not have been barning
Interrogative form
Simple form
should I barn? should you barn? should she barn? should we barn? should you barn? should they barn?
V-ing form
should I be barning? should you be barning? should she be barning? should we be barning? should you be barning? should they be barning?
Perfect
should I have barned? should you have barned? should she have barned? should we have barned? should you have barned? should they have barned?
V-ing perfect
should I have been barning? should you have been barning? should she have been barning? should we have been barning? should you have been barning? should they have been barning?
Interro-negative form
Simple form
should I not barn? should you not barn? should she not barn? should we not barn? should you not barn? should they not barn?
V-ing form
should I not be barning? should you not be barning? should she not be barning? should we not be barning? should you not be barning? should they not be barning?
Perfect
should I not have barned? should you not have barned? should she not have barned? should we not have barned? should you not have barned? should they not have barned?
V-ing perfect
should I not have been barning? should you not have been barning? should she not have been barning? should we not have been barning? should you not have been barning? should they not have been barning?