English verb conjugation
SHOULD PERSIST

Regular verb: persist - persisted - persisted

Affirmation

Simple form	V-ing form
I'd persist you'd persist he'd persist we'd persist you'd persist they'd persist	I'd be persisting you'd be persisting he'd be persisting we'd be persisting you'd be persisting they'd be persisting
Perfect	V-ing perfect
I should've persisted you should've persisted he should've persisted we should've persisted you should've persisted they should've persisted	I should've been persisting you should've been persisting he should've been persisting we should've been persisting you should've been persisting they should've been persisting

Negation

Simple form	V-ing form
I shouldn't persist you shouldn't persist he shouldn't persist we shouldn't persist you shouldn't persist they shouldn't persist	I shouldn't be persisting you shouldn't be persisting he shouldn't be persisting we shouldn't be persisting you shouldn't be persisting they shouldn't be persisting
Perfect	V-ing perfect
I shouldn't have persisted you shouldn't have persisted he shouldn't have persisted we shouldn't have persisted you shouldn't have persisted they shouldn't have persisted	I shouldn't have been persisting you shouldn't have been persisting he shouldn't have been persisting we shouldn't have been persisting you shouldn't have been persisting they shouldn't have been persisting

Interrogative form

Simple form	V-ing form
should I persist? should you persist? should he persist? should we persist? should you persist? should they persist?	should I be persisting? should you be persisting? should he be persisting? should we be persisting? should you be persisting? should they be persisting?
Perfect	V-ing perfect
should I have persisted? should you have persisted? should he have persisted? should we have persisted? should you have persisted? should they have persisted?	should I have been persisting? should you have been persisting? should he have been persisting? should we have been persisting? should you have been persisting? should they have been persisting?

Interro-negative form

Simple form	V-ing form
shouldn't I persist? shouldn't you persist? shouldn't he persist? shouldn't we persist? shouldn't you persist? shouldn't they persist?	shouldn't I be persisting? shouldn't you be persisting? shouldn't he be persisting? shouldn't we be persisting? shouldn't you be persisting? shouldn't they be persisting?
Perfect	V-ing perfect
shouldn't I have persisted? shouldn't you have persisted? shouldn't he have persisted? shouldn't we have persisted? shouldn't you have persisted? shouldn't they have persisted?	shouldn't I have been persisting? shouldn't you have been persisting? shouldn't he have been persisting? shouldn't we have been persisting? shouldn't you have been persisting? shouldn't they have been persisting?