I'd be pinning you'd be pinning she'd be pinning we'd be pinning you'd be pinning they'd be pinning
Perfect
I should've pinned you should've pinned she should've pinned we should've pinned you should've pinned they should've pinned
V-ing perfect
I should've been pinning you should've been pinning she should've been pinning we should've been pinning you should've been pinning they should've been pinning
Negation
Simple form
I shouldn't pin you shouldn't pin she shouldn't pin we shouldn't pin you shouldn't pin they shouldn't pin
V-ing form
I shouldn't be pinning you shouldn't be pinning she shouldn't be pinning we shouldn't be pinning you shouldn't be pinning they shouldn't be pinning
Perfect
I shouldn't have pinned you shouldn't have pinned she shouldn't have pinned we shouldn't have pinned you shouldn't have pinned they shouldn't have pinned
V-ing perfect
I shouldn't have been pinning you shouldn't have been pinning she shouldn't have been pinning we shouldn't have been pinning you shouldn't have been pinning they shouldn't have been pinning
Interrogative form
Simple form
should I pin? should you pin? should she pin? should we pin? should you pin? should they pin?
V-ing form
should I be pinning? should you be pinning? should she be pinning? should we be pinning? should you be pinning? should they be pinning?
Perfect
should I have pinned? should you have pinned? should she 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 she have been pinning? should we have been pinning? should you have been pinning? should they have been pinning?
Interro-negative form
Simple form
shouldn't I pin? shouldn't you pin? shouldn't she pin? shouldn't we pin? shouldn't you pin? shouldn't they pin?
V-ing form
shouldn't I be pinning? shouldn't you be pinning? shouldn't she be pinning? shouldn't we be pinning? shouldn't you be pinning? shouldn't they be pinning?
Perfect
shouldn't I have pinned? shouldn't you have pinned? shouldn't she have pinned? shouldn't we have pinned? shouldn't you have pinned? shouldn't they have pinned?
V-ing perfect
shouldn't I have been pinning? shouldn't you have been pinning? shouldn't she have been pinning? shouldn't we have been pinning? shouldn't you have been pinning? shouldn't they have been pinning?