should persist
Regular verb: persist - persisted- persisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?