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