I'd be securing you'd be securing he'd be securing we'd be securing you'd be securing they'd be securing
Perfect
I should've secured you should've secured he 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 he 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 he 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 he 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 he 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 he 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 he secure? should we secure? should you secure? should they secure?
V-ing form
should I be securing? should you be securing? should he be securing? should we be securing? should you be securing? should they be securing?
Perfect
should I have secured? should you have secured? should he 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 he 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 he 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 he 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 he 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 he have been securing? shouldn't we have been securing? shouldn't you have been securing? shouldn't they have been securing?