I should pair you should pair he should pair we should pair you should pair they should pair
V-ing form
I should be pairing you should be pairing he should be pairing we should be pairing you should be pairing they should be pairing
Perfect
I should have paired you should have paired he should have paired we should have paired you should have paired they should have paired
V-ing perfect
I should have been pairing you should have been pairing he should have been pairing we should have been pairing you should have been pairing they should have been pairing
Negation
Simple form
I should not pair you should not pair he should not pair we should not pair you should not pair they should not pair
V-ing form
I should not be pairing you should not be pairing he should not be pairing we should not be pairing you should not be pairing they should not be pairing
Perfect
I should not have paired you should not have paired he should not have paired we should not have paired you should not have paired they should not have paired
V-ing perfect
I should not have been pairing you should not have been pairing he should not have been pairing we should not have been pairing you should not have been pairing they should not have been pairing
Interrogative form
Simple form
should I pair? should you pair? should he pair? should we pair? should you pair? should they pair?
V-ing form
should I be pairing? should you be pairing? should he be pairing? should we be pairing? should you be pairing? should they be pairing?
Perfect
should I have paired? should you have paired? should he have paired? should we have paired? should you have paired? should they have paired?
V-ing perfect
should I have been pairing? should you have been pairing? should he have been pairing? should we have been pairing? should you have been pairing? should they have been pairing?
Interro-negative form
Simple form
should I not pair? should you not pair? should he not pair? should we not pair? should you not pair? should they not pair?
V-ing form
should I not be pairing? should you not be pairing? should he not be pairing? should we not be pairing? should you not be pairing? should they not be pairing?
Perfect
should I not have paired? should you not have paired? should he not have paired? should we not have paired? should you not have paired? should they not have paired?
V-ing perfect
should I not have been pairing? should you not have been pairing? should he not have been pairing? should we not have been pairing? should you not have been pairing? should they not have been pairing?