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