I should pin you should pin he should pin we should pin you should pin they should pin
V-ing form
I should be pinning you should be pinning he should be pinning we should be pinning you should be pinning they should be pinning
Perfect
I should have pinned you should have pinned he should have pinned we should have pinned you should have pinned they should have pinned
V-ing perfect
I should have been pinning you should have been pinning he should have been pinning we should have been pinning you should have been pinning they should have been pinning
Negation
Simple form
I should not pin you should not pin he should not pin we should not pin you should not pin they should not pin
V-ing form
I should not be pinning you should not be pinning he should not be pinning we should not be pinning you should not be pinning they should not be pinning
Perfect
I should not have pinned you should not have pinned he should not have pinned we should not have pinned you should not have pinned they should not have pinned
V-ing perfect
I should not have been pinning you should not have been pinning he should not have been pinning we should not have been pinning you should not have been pinning they should not have been pinning
Interrogative form
Simple form
should I pin? should you pin? should he pin? should we pin? should you pin? should they pin?
V-ing form
should I be pinning? should you be pinning? should he be pinning? should we be pinning? should you be pinning? should they be pinning?
Perfect
should I have pinned? should you have pinned? should he have pinned? should we have pinned? should you have pinned? should they have pinned?
V-ing perfect
should I have been pinning? should you have been pinning? should he have been pinning? should we have been pinning? should you have been pinning? should they have been pinning?
Interro-negative form
Simple form
should I not pin? should you not pin? should he not pin? should we not pin? should you not pin? should they not pin?
V-ing form
should I not be pinning? should you not be pinning? should he not be pinning? should we not be pinning? should you not be pinning? should they not be pinning?
Perfect
should I not have pinned? should you not have pinned? should he not have pinned? should we not have pinned? should you not have pinned? should they not have pinned?
V-ing perfect
should I not have been pinning? should you not have been pinning? should he not have been pinning? should we not have been pinning? should you not have been pinning? should they not have been pinning?