English verb conjugation
SHOULD PROPOSE

Regular verb: propose - proposed - proposed

Affirmation

Simple form	V-ing form
I'd propose you'd propose he'd propose we'd propose you'd propose they'd propose	I'd be proposing you'd be proposing he'd be proposing we'd be proposing you'd be proposing they'd be proposing
Perfect	V-ing perfect
I should've proposed you should've proposed he should've proposed we should've proposed you should've proposed they should've proposed	I should've been proposing you should've been proposing he should've been proposing we should've been proposing you should've been proposing they should've been proposing

Negation

Simple form	V-ing form
I shouldn't propose you shouldn't propose he shouldn't propose we shouldn't propose you shouldn't propose they shouldn't propose	I shouldn't be proposing you shouldn't be proposing he shouldn't be proposing we shouldn't be proposing you shouldn't be proposing they shouldn't be proposing
Perfect	V-ing perfect
I shouldn't have proposed you shouldn't have proposed he shouldn't have proposed we shouldn't have proposed you shouldn't have proposed they shouldn't have proposed	I shouldn't have been proposing you shouldn't have been proposing he shouldn't have been proposing we shouldn't have been proposing you shouldn't have been proposing they shouldn't have been proposing

Interrogative form

Simple form	V-ing form
should I propose? should you propose? should he propose? should we propose? should you propose? should they propose?	should I be proposing? should you be proposing? should he be proposing? should we be proposing? should you be proposing? should they be proposing?
Perfect	V-ing perfect
should I have proposed? should you have proposed? should he have proposed? should we have proposed? should you have proposed? should they have proposed?	should I have been proposing? should you have been proposing? should he have been proposing? should we have been proposing? should you have been proposing? should they have been proposing?

Interro-negative form

Simple form	V-ing form
shouldn't I propose? shouldn't you propose? shouldn't he propose? shouldn't we propose? shouldn't you propose? shouldn't they propose?	shouldn't I be proposing? shouldn't you be proposing? shouldn't he be proposing? shouldn't we be proposing? shouldn't you be proposing? shouldn't they be proposing?
Perfect	V-ing perfect
shouldn't I have proposed? shouldn't you have proposed? shouldn't he have proposed? shouldn't we have proposed? shouldn't you have proposed? shouldn't they have proposed?	shouldn't I have been proposing? shouldn't you have been proposing? shouldn't he have been proposing? shouldn't we have been proposing? shouldn't you have been proposing? shouldn't they have been proposing?