English verb conjugation
SHOULD SERVE

Regular verb: serve - served - served

Affirmation

Simple form	V-ing form
I should serve you should serve she should serve we should serve you should serve they should serve	I should be serving you should be serving she should be serving we should be serving you should be serving they should be serving
Perfect	V-ing perfect
I should have served you should have served she should have served we should have served you should have served they should have served	I should have been serving you should have been serving she should have been serving we should have been serving you should have been serving they should have been serving

Negation

Simple form	V-ing form
I should not serve you should not serve she should not serve we should not serve you should not serve they should not serve	I should not be serving you should not be serving she should not be serving we should not be serving you should not be serving they should not be serving
Perfect	V-ing perfect
I should not have served you should not have served she should not have served we should not have served you should not have served they should not have served	I should not have been serving you should not have been serving she should not have been serving we should not have been serving you should not have been serving they should not have been serving

Interrogative form

Simple form	V-ing form
should I serve? should you serve? should she serve? should we serve? should you serve? should they serve?	should I be serving? should you be serving? should she be serving? should we be serving? should you be serving? should they be serving?
Perfect	V-ing perfect
should I have served? should you have served? should she have served? should we have served? should you have served? should they have served?	should I have been serving? should you have been serving? should she have been serving? should we have been serving? should you have been serving? should they have been serving?

Interro-negative form

Simple form	V-ing form
should I not serve? should you not serve? should she not serve? should we not serve? should you not serve? should they not serve?	should I not be serving? should you not be serving? should she not be serving? should we not be serving? should you not be serving? should they not be serving?
Perfect	V-ing perfect
should I not have served? should you not have served? should she not have served? should we not have served? should you not have served? should they not have served?	should I not have been serving? should you not have been serving? should she not have been serving? should we not have been serving? should you not have been serving? should they not have been serving?