English verb conjugation
SHOULD PERDURE

Regular verb: perdure - perdured - perdured

Affirmation

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

Negation

Simple form	V-ing form
I should not perdure you should not perdure he should not perdure we should not perdure you should not perdure they should not perdure	I should not be perduring you should not be perduring he should not be perduring we should not be perduring you should not be perduring they should not be perduring
Perfect	V-ing perfect
I should not have perdured you should not have perdured he should not have perdured we should not have perdured you should not have perdured they should not have perdured	I should not have been perduring you should not have been perduring he should not have been perduring we should not have been perduring you should not have been perduring they should not 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
should I not perdure? should you not perdure? should he not perdure? should we not perdure? should you not perdure? should they not perdure?	should I not be perduring? should you not be perduring? should he not be perduring? should we not be perduring? should you not be perduring? should they not be perduring?
Perfect	V-ing perfect
should I not have perdured? should you not have perdured? should he not have perdured? should we not have perdured? should you not have perdured? should they not have perdured?	should I not have been perduring? should you not have been perduring? should he not have been perduring? should we not have been perduring? should you not have been perduring? should they not have been perduring?