I should summate you should summate she should summate we should summate you should summate they should summate
V-ing form
I should be summating you should be summating she should be summating we should be summating you should be summating they should be summating
Perfect
I should have summated you should have summated she should have summated we should have summated you should have summated they should have summated
V-ing perfect
I should have been summating you should have been summating she should have been summating we should have been summating you should have been summating they should have been summating
Negation
Simple form
I should not summate you should not summate she should not summate we should not summate you should not summate they should not summate
V-ing form
I should not be summating you should not be summating she should not be summating we should not be summating you should not be summating they should not be summating
Perfect
I should not have summated you should not have summated she should not have summated we should not have summated you should not have summated they should not have summated
V-ing perfect
I should not have been summating you should not have been summating she should not have been summating we should not have been summating you should not have been summating they should not have been summating
Interrogative form
Simple form
should I summate? should you summate? should she summate? should we summate? should you summate? should they summate?
V-ing form
should I be summating? should you be summating? should she be summating? should we be summating? should you be summating? should they be summating?
Perfect
should I have summated? should you have summated? should she have summated? should we have summated? should you have summated? should they have summated?
V-ing perfect
should I have been summating? should you have been summating? should she have been summating? should we have been summating? should you have been summating? should they have been summating?
Interro-negative form
Simple form
should I not summate? should you not summate? should she not summate? should we not summate? should you not summate? should they not summate?
V-ing form
should I not be summating? should you not be summating? should she not be summating? should we not be summating? should you not be summating? should they not be summating?
Perfect
should I not have summated? should you not have summated? should she not have summated? should we not have summated? should you not have summated? should they not have summated?
V-ing perfect
should I not have been summating? should you not have been summating? should she not have been summating? should we not have been summating? should you not have been summating? should they not have been summating?