English verb conjugation
SHOULD PERSEVERE

Regular verb: persevere - persevered - persevered

Affirmation

Simple form	V-ing form
I'd persevere you'd persevere he'd persevere we'd persevere you'd persevere they'd persevere	I'd be persevering you'd be persevering he'd be persevering we'd be persevering you'd be persevering they'd be persevering
Perfect	V-ing perfect
I should've persevered you should've persevered he should've persevered we should've persevered you should've persevered they should've persevered	I should've been persevering you should've been persevering he should've been persevering we should've been persevering you should've been persevering they should've been persevering

Negation

Simple form	V-ing form
I shouldn't persevere you shouldn't persevere he shouldn't persevere we shouldn't persevere you shouldn't persevere they shouldn't persevere	I shouldn't be persevering you shouldn't be persevering he shouldn't be persevering we shouldn't be persevering you shouldn't be persevering they shouldn't be persevering
Perfect	V-ing perfect
I shouldn't have persevered you shouldn't have persevered he shouldn't have persevered we shouldn't have persevered you shouldn't have persevered they shouldn't have persevered	I shouldn't have been persevering you shouldn't have been persevering he shouldn't have been persevering we shouldn't have been persevering you shouldn't have been persevering they shouldn't have been persevering

Interrogative form

Simple form	V-ing form
should I persevere? should you persevere? should he persevere? should we persevere? should you persevere? should they persevere?	should I be persevering? should you be persevering? should he be persevering? should we be persevering? should you be persevering? should they be persevering?
Perfect	V-ing perfect
should I have persevered? should you have persevered? should he have persevered? should we have persevered? should you have persevered? should they have persevered?	should I have been persevering? should you have been persevering? should he have been persevering? should we have been persevering? should you have been persevering? should they have been persevering?

Interro-negative form

Simple form	V-ing form
shouldn't I persevere? shouldn't you persevere? shouldn't he persevere? shouldn't we persevere? shouldn't you persevere? shouldn't they persevere?	shouldn't I be persevering? shouldn't you be persevering? shouldn't he be persevering? shouldn't we be persevering? shouldn't you be persevering? shouldn't they be persevering?
Perfect	V-ing perfect
shouldn't I have persevered? shouldn't you have persevered? shouldn't he have persevered? shouldn't we have persevered? shouldn't you have persevered? shouldn't they have persevered?	shouldn't I have been persevering? shouldn't you have been persevering? shouldn't he have been persevering? shouldn't we have been persevering? shouldn't you have been persevering? shouldn't they have been persevering?