English verb conjugation
SHOULD PERDURE

Regular verb: perdure - perdured - perdured

Affirmation

Simple form	V-ing form
I'd perdure you'd perdure he'd perdure we'd perdure you'd perdure they'd perdure	I'd be perduring you'd be perduring he'd be perduring we'd be perduring you'd be perduring they'd be perduring
Perfect	V-ing perfect
I should've perdured you should've perdured he should've perdured we should've perdured you should've perdured they should've perdured	I should've been perduring you should've been perduring he should've been perduring we should've been perduring you should've been perduring they should've been perduring

Negation

Simple form	V-ing form
I shouldn't perdure you shouldn't perdure he shouldn't perdure we shouldn't perdure you shouldn't perdure they shouldn't perdure	I shouldn't be perduring you shouldn't be perduring he shouldn't be perduring we shouldn't be perduring you shouldn't be perduring they shouldn't be perduring
Perfect	V-ing perfect
I shouldn't have perdured you shouldn't have perdured he shouldn't have perdured we shouldn't have perdured you shouldn't have perdured they shouldn't have perdured	I shouldn't have been perduring you shouldn't have been perduring he shouldn't have been perduring we shouldn't have been perduring you shouldn't have been perduring they shouldn't have been perduring

Interrogative form

Simple form	V-ing form
should I perdure? should you perdure? should he perdure? should we perdure? should you perdure? should they perdure?	should I be perduring? should you be perduring? should he be perduring? should we be perduring? should you be perduring? should they be perduring?
Perfect	V-ing perfect
should I have perdured? should you have perdured? should he have perdured? should we have perdured? should you have perdured? should they have perdured?	should I have been perduring? should you have been perduring? should he have been perduring? should we have been perduring? should you have been perduring? should they have been perduring?

Interro-negative form

Simple form	V-ing form
shouldn't I perdure? shouldn't you perdure? shouldn't he perdure? shouldn't we perdure? shouldn't you perdure? shouldn't they perdure?	shouldn't I be perduring? shouldn't you be perduring? shouldn't he be perduring? shouldn't we be perduring? shouldn't you be perduring? shouldn't they be perduring?
Perfect	V-ing perfect
shouldn't I have perdured? shouldn't you have perdured? shouldn't he have perdured? shouldn't we have perdured? shouldn't you have perdured? shouldn't they have perdured?	shouldn't I have been perduring? shouldn't you have been perduring? shouldn't he have been perduring? shouldn't we have been perduring? shouldn't you have been perduring? shouldn't they have been perduring?