English verb conjugation
SHOULD REFEREE

Regular verb: referee - refereed - refereed

Affirmation

Simple form	V-ing form
I should referee you should referee she should referee we should referee you should referee they should referee	I should be refereeing you should be refereeing she should be refereeing we should be refereeing you should be refereeing they should be refereeing
Perfect	V-ing perfect
I should have refereed you should have refereed she should have refereed we should have refereed you should have refereed they should have refereed	I should have been refereeing you should have been refereeing she should have been refereeing we should have been refereeing you should have been refereeing they should have been refereeing

Negation

Simple form	V-ing form
I should not referee you should not referee she should not referee we should not referee you should not referee they should not referee	I should not be refereeing you should not be refereeing she should not be refereeing we should not be refereeing you should not be refereeing they should not be refereeing
Perfect	V-ing perfect
I should not have refereed you should not have refereed she should not have refereed we should not have refereed you should not have refereed they should not have refereed	I should not have been refereeing you should not have been refereeing she should not have been refereeing we should not have been refereeing you should not have been refereeing they should not have been refereeing

Interrogative form

Simple form	V-ing form
should I referee? should you referee? should she referee? should we referee? should you referee? should they referee?	should I be refereeing? should you be refereeing? should she be refereeing? should we be refereeing? should you be refereeing? should they be refereeing?
Perfect	V-ing perfect
should I have refereed? should you have refereed? should she have refereed? should we have refereed? should you have refereed? should they have refereed?	should I have been refereeing? should you have been refereeing? should she have been refereeing? should we have been refereeing? should you have been refereeing? should they have been refereeing?

Interro-negative form

Simple form	V-ing form
should I not referee? should you not referee? should she not referee? should we not referee? should you not referee? should they not referee?	should I not be refereeing? should you not be refereeing? should she not be refereeing? should we not be refereeing? should you not be refereeing? should they not be refereeing?
Perfect	V-ing perfect
should I not have refereed? should you not have refereed? should she not have refereed? should we not have refereed? should you not have refereed? should they not have refereed?	should I not have been refereeing? should you not have been refereeing? should she not have been refereeing? should we not have been refereeing? should you not have been refereeing? should they not have been refereeing?