English verb conjugation
SHOULD LOCK

Regular verb: lock - locked - locked

Affirmation

Simple form	V-ing form
I should lock you should lock she should lock we should lock you should lock they should lock	I should be locking you should be locking she should be locking we should be locking you should be locking they should be locking
Perfect	V-ing perfect
I should have locked you should have locked she should have locked we should have locked you should have locked they should have locked	I should have been locking you should have been locking she should have been locking we should have been locking you should have been locking they should have been locking

Negation

Simple form	V-ing form
I should not lock you should not lock she should not lock we should not lock you should not lock they should not lock	I should not be locking you should not be locking she should not be locking we should not be locking you should not be locking they should not be locking
Perfect	V-ing perfect
I should not have locked you should not have locked she should not have locked we should not have locked you should not have locked they should not have locked	I should not have been locking you should not have been locking she should not have been locking we should not have been locking you should not have been locking they should not have been locking

Interrogative form

Simple form	V-ing form
should I lock? should you lock? should she lock? should we lock? should you lock? should they lock?	should I be locking? should you be locking? should she be locking? should we be locking? should you be locking? should they be locking?
Perfect	V-ing perfect
should I have locked? should you have locked? should she have locked? should we have locked? should you have locked? should they have locked?	should I have been locking? should you have been locking? should she have been locking? should we have been locking? should you have been locking? should they have been locking?

Interro-negative form

Simple form	V-ing form
should I not lock? should you not lock? should she not lock? should we not lock? should you not lock? should they not lock?	should I not be locking? should you not be locking? should she not be locking? should we not be locking? should you not be locking? should they not be locking?
Perfect	V-ing perfect
should I not have locked? should you not have locked? should she not have locked? should we not have locked? should you not have locked? should they not have locked?	should I not have been locking? should you not have been locking? should she not have been locking? should we not have been locking? should you not have been locking? should they not have been locking?