English verb conjugation
SHOULD SUPPOSE

Regular verb: suppose - supposed - supposed

Affirmation

Simple form	V-ing form
I'd suppose you'd suppose he'd suppose we'd suppose you'd suppose they'd suppose	I'd be supposing you'd be supposing he'd be supposing we'd be supposing you'd be supposing they'd be supposing
Perfect	V-ing perfect
I should've supposed you should've supposed he should've supposed we should've supposed you should've supposed they should've supposed	I should've been supposing you should've been supposing he should've been supposing we should've been supposing you should've been supposing they should've been supposing

Negation

Simple form	V-ing form
I shouldn't suppose you shouldn't suppose he shouldn't suppose we shouldn't suppose you shouldn't suppose they shouldn't suppose	I shouldn't be supposing you shouldn't be supposing he shouldn't be supposing we shouldn't be supposing you shouldn't be supposing they shouldn't be supposing
Perfect	V-ing perfect
I shouldn't have supposed you shouldn't have supposed he shouldn't have supposed we shouldn't have supposed you shouldn't have supposed they shouldn't have supposed	I shouldn't have been supposing you shouldn't have been supposing he shouldn't have been supposing we shouldn't have been supposing you shouldn't have been supposing they shouldn't have been supposing

Interrogative form

Simple form	V-ing form
should I suppose? should you suppose? should he suppose? should we suppose? should you suppose? should they suppose?	should I be supposing? should you be supposing? should he be supposing? should we be supposing? should you be supposing? should they be supposing?
Perfect	V-ing perfect
should I have supposed? should you have supposed? should he have supposed? should we have supposed? should you have supposed? should they have supposed?	should I have been supposing? should you have been supposing? should he have been supposing? should we have been supposing? should you have been supposing? should they have been supposing?

Interro-negative form

Simple form	V-ing form
shouldn't I suppose? shouldn't you suppose? shouldn't he suppose? shouldn't we suppose? shouldn't you suppose? shouldn't they suppose?	shouldn't I be supposing? shouldn't you be supposing? shouldn't he be supposing? shouldn't we be supposing? shouldn't you be supposing? shouldn't they be supposing?
Perfect	V-ing perfect
shouldn't I have supposed? shouldn't you have supposed? shouldn't he have supposed? shouldn't we have supposed? shouldn't you have supposed? shouldn't they have supposed?	shouldn't I have been supposing? shouldn't you have been supposing? shouldn't he have been supposing? shouldn't we have been supposing? shouldn't you have been supposing? shouldn't they have been supposing?