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