English verb conjugation
SHOULD ADD

Regular verb: add - added - added

Affirmation

Simple form	V-ing form
I should add you should add she should add we should add you should add they should add	I should be adding you should be adding she should be adding we should be adding you should be adding they should be adding
Perfect	V-ing perfect
I should have added you should have added she should have added we should have added you should have added they should have added	I should have been adding you should have been adding she should have been adding we should have been adding you should have been adding they should have been adding

Negation

Simple form	V-ing form
I should not add you should not add she should not add we should not add you should not add they should not add	I should not be adding you should not be adding she should not be adding we should not be adding you should not be adding they should not be adding
Perfect	V-ing perfect
I should not have added you should not have added she should not have added we should not have added you should not have added they should not have added	I should not have been adding you should not have been adding she should not have been adding we should not have been adding you should not have been adding they should not have been adding

Interrogative form

Simple form	V-ing form
should I add? should you add? should she add? should we add? should you add? should they add?	should I be adding? should you be adding? should she be adding? should we be adding? should you be adding? should they be adding?
Perfect	V-ing perfect
should I have added? should you have added? should she have added? should we have added? should you have added? should they have added?	should I have been adding? should you have been adding? should she have been adding? should we have been adding? should you have been adding? should they have been adding?

Interro-negative form

Simple form	V-ing form
should I not add? should you not add? should she not add? should we not add? should you not add? should they not add?	should I not be adding? should you not be adding? should she not be adding? should we not be adding? should you not be adding? should they not be adding?
Perfect	V-ing perfect
should I not have added? should you not have added? should she not have added? should we not have added? should you not have added? should they not have added?	should I not have been adding? should you not have been adding? should she not have been adding? should we not have been adding? should you not have been adding? should they not have been adding?