I'd be assuring you'd be assuring she'd be assuring we'd be assuring you'd be assuring they'd be assuring
Perfect
I should've assured you should've assured she 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 she 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 she 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 she 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 she 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 she 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 she assure? should we assure? should you assure? should they assure?
V-ing form
should I be assuring? should you be assuring? should she be assuring? should we be assuring? should you be assuring? should they be assuring?
Perfect
should I have assured? should you have assured? should she 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 she 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 she 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 she 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 she 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 she have been assuring? shouldn't we have been assuring? shouldn't you have been assuring? shouldn't they have been assuring?