English verb conjugation
SHOULD EXPIRE

Regular verb: expire - expired - expired

Affirmation

Simple form	V-ing form
I should expire you should expire he should expire we should expire you should expire they should expire	I should be expiring you should be expiring he should be expiring we should be expiring you should be expiring they should be expiring
Perfect	V-ing perfect
I should have expired you should have expired he should have expired we should have expired you should have expired they should have expired	I should have been expiring you should have been expiring he should have been expiring we should have been expiring you should have been expiring they should have been expiring

Negation

Simple form	V-ing form
I should not expire you should not expire he should not expire we should not expire you should not expire they should not expire	I should not be expiring you should not be expiring he should not be expiring we should not be expiring you should not be expiring they should not be expiring
Perfect	V-ing perfect
I should not have expired you should not have expired he should not have expired we should not have expired you should not have expired they should not have expired	I should not have been expiring you should not have been expiring he should not have been expiring we should not have been expiring you should not have been expiring they should not have been expiring

Interrogative form

Simple form	V-ing form
should I expire? should you expire? should he expire? should we expire? should you expire? should they expire?	should I be expiring? should you be expiring? should he be expiring? should we be expiring? should you be expiring? should they be expiring?
Perfect	V-ing perfect
should I have expired? should you have expired? should he have expired? should we have expired? should you have expired? should they have expired?	should I have been expiring? should you have been expiring? should he have been expiring? should we have been expiring? should you have been expiring? should they have been expiring?

Interro-negative form

Simple form	V-ing form
should I not expire? should you not expire? should he not expire? should we not expire? should you not expire? should they not expire?	should I not be expiring? should you not be expiring? should he not be expiring? should we not be expiring? should you not be expiring? should they not be expiring?
Perfect	V-ing perfect
should I not have expired? should you not have expired? should he not have expired? should we not have expired? should you not have expired? should they not have expired?	should I not have been expiring? should you not have been expiring? should he not have been expiring? should we not have been expiring? should you not have been expiring? should they not have been expiring?