I'd be locking you'd be locking he'd be locking we'd be locking you'd be locking they'd be locking
Perfect
I should've locked you should've locked he should've locked we should've locked you should've locked they should've locked
V-ing perfect
I should've been locking you should've been locking he should've been locking we should've been locking you should've been locking they should've been locking
Negation
Simple form
I shouldn't lock you shouldn't lock he shouldn't lock we shouldn't lock you shouldn't lock they shouldn't lock
V-ing form
I shouldn't be locking you shouldn't be locking he shouldn't be locking we shouldn't be locking you shouldn't be locking they shouldn't be locking
Perfect
I shouldn't have locked you shouldn't have locked he shouldn't have locked we shouldn't have locked you shouldn't have locked they shouldn't have locked
V-ing perfect
I shouldn't have been locking you shouldn't have been locking he shouldn't have been locking we shouldn't have been locking you shouldn't have been locking they shouldn't have been locking
Interrogative form
Simple form
should I lock? should you lock? should he lock? should we lock? should you lock? should they lock?
V-ing form
should I be locking? should you be locking? should he be locking? should we be locking? should you be locking? should they be locking?
Perfect
should I have locked? should you have locked? should he have locked? should we have locked? should you have locked? should they have locked?
V-ing perfect
should I have been locking? should you have been locking? should he have been locking? should we have been locking? should you have been locking? should they have been locking?
Interro-negative form
Simple form
shouldn't I lock? shouldn't you lock? shouldn't he lock? shouldn't we lock? shouldn't you lock? shouldn't they lock?
V-ing form
shouldn't I be locking? shouldn't you be locking? shouldn't he be locking? shouldn't we be locking? shouldn't you be locking? shouldn't they be locking?
Perfect
shouldn't I have locked? shouldn't you have locked? shouldn't he have locked? shouldn't we have locked? shouldn't you have locked? shouldn't they have locked?
V-ing perfect
shouldn't I have been locking? shouldn't you have been locking? shouldn't he have been locking? shouldn't we have been locking? shouldn't you have been locking? shouldn't they have been locking?