English verb conjugation
SHOULD PROLONG

Regular verb: prolong - prolonged - prolonged

Affirmation

Simple form	V-ing form
I'd prolong you'd prolong he'd prolong we'd prolong you'd prolong they'd prolong	I'd be prolonging you'd be prolonging he'd be prolonging we'd be prolonging you'd be prolonging they'd be prolonging
Perfect	V-ing perfect
I should've prolonged you should've prolonged he should've prolonged we should've prolonged you should've prolonged they should've prolonged	I should've been prolonging you should've been prolonging he should've been prolonging we should've been prolonging you should've been prolonging they should've been prolonging

Negation

Simple form	V-ing form
I shouldn't prolong you shouldn't prolong he shouldn't prolong we shouldn't prolong you shouldn't prolong they shouldn't prolong	I shouldn't be prolonging you shouldn't be prolonging he shouldn't be prolonging we shouldn't be prolonging you shouldn't be prolonging they shouldn't be prolonging
Perfect	V-ing perfect
I shouldn't have prolonged you shouldn't have prolonged he shouldn't have prolonged we shouldn't have prolonged you shouldn't have prolonged they shouldn't have prolonged	I shouldn't have been prolonging you shouldn't have been prolonging he shouldn't have been prolonging we shouldn't have been prolonging you shouldn't have been prolonging they shouldn't have been prolonging

Interrogative form

Simple form	V-ing form
should I prolong? should you prolong? should he prolong? should we prolong? should you prolong? should they prolong?	should I be prolonging? should you be prolonging? should he be prolonging? should we be prolonging? should you be prolonging? should they be prolonging?
Perfect	V-ing perfect
should I have prolonged? should you have prolonged? should he have prolonged? should we have prolonged? should you have prolonged? should they have prolonged?	should I have been prolonging? should you have been prolonging? should he have been prolonging? should we have been prolonging? should you have been prolonging? should they have been prolonging?

Interro-negative form

Simple form	V-ing form
shouldn't I prolong? shouldn't you prolong? shouldn't he prolong? shouldn't we prolong? shouldn't you prolong? shouldn't they prolong?	shouldn't I be prolonging? shouldn't you be prolonging? shouldn't he be prolonging? shouldn't we be prolonging? shouldn't you be prolonging? shouldn't they be prolonging?
Perfect	V-ing perfect
shouldn't I have prolonged? shouldn't you have prolonged? shouldn't he have prolonged? shouldn't we have prolonged? shouldn't you have prolonged? shouldn't they have prolonged?	shouldn't I have been prolonging? shouldn't you have been prolonging? shouldn't he have been prolonging? shouldn't we have been prolonging? shouldn't you have been prolonging? shouldn't they have been prolonging?