English verb conjugation
SHOULD PERDURE

Regular verb: perdure - perdured - perdured

Affirmation

Simple form	V-ing form
I'd perdure you'd perdure she'd perdure we'd perdure you'd perdure they'd perdure	I'd be perduring you'd be perduring she'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 she 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 she 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 she 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 she 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 she 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 she 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 she perdure? should we perdure? should you perdure? should they perdure?	should I be perduring? should you be perduring? should she 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 she 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 she 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 she 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 she 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 she 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 she have been perduring? shouldn't we have been perduring? shouldn't you have been perduring? shouldn't they have been perduring?