should add
Regular verb: add - added- added

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?