I should bark you should bark he should bark we should bark you should bark they should bark
V-ing form
I should be barking you should be barking he should be barking we should be barking you should be barking they should be barking
Perfect
I should have barked you should have barked he should have barked we should have barked you should have barked they should have barked
V-ing perfect
I should have been barking you should have been barking he should have been barking we should have been barking you should have been barking they should have been barking
Negation
Simple form
I should not bark you should not bark he should not bark we should not bark you should not bark they should not bark
V-ing form
I should not be barking you should not be barking he should not be barking we should not be barking you should not be barking they should not be barking
Perfect
I should not have barked you should not have barked he should not have barked we should not have barked you should not have barked they should not have barked
V-ing perfect
I should not have been barking you should not have been barking he should not have been barking we should not have been barking you should not have been barking they should not have been barking
Interrogative form
Simple form
should I bark? should you bark? should he bark? should we bark? should you bark? should they bark?
V-ing form
should I be barking? should you be barking? should he be barking? should we be barking? should you be barking? should they be barking?
Perfect
should I have barked? should you have barked? should he have barked? should we have barked? should you have barked? should they have barked?
V-ing perfect
should I have been barking? should you have been barking? should he have been barking? should we have been barking? should you have been barking? should they have been barking?
Interro-negative form
Simple form
should I not bark? should you not bark? should he not bark? should we not bark? should you not bark? should they not bark?
V-ing form
should I not be barking? should you not be barking? should he not be barking? should we not be barking? should you not be barking? should they not be barking?
Perfect
should I not have barked? should you not have barked? should he not have barked? should we not have barked? should you not have barked? should they not have barked?
V-ing perfect
should I not have been barking? should you not have been barking? should he not have been barking? should we not have been barking? should you not have been barking? should they not have been barking?