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