I should alternate you should alternate he should alternate we should alternate you should alternate they should alternate
V-ing form
I should be alternating you should be alternating he should be alternating we should be alternating you should be alternating they should be alternating
Perfect
I should have alternated you should have alternated he should have alternated we should have alternated you should have alternated they should have alternated
V-ing perfect
I should have been alternating you should have been alternating he should have been alternating we should have been alternating you should have been alternating they should have been alternating
Negation
Simple form
I should not alternate you should not alternate he should not alternate we should not alternate you should not alternate they should not alternate
V-ing form
I should not be alternating you should not be alternating he should not be alternating we should not be alternating you should not be alternating they should not be alternating
Perfect
I should not have alternated you should not have alternated he should not have alternated we should not have alternated you should not have alternated they should not have alternated
V-ing perfect
I should not have been alternating you should not have been alternating he should not have been alternating we should not have been alternating you should not have been alternating they should not have been alternating
Interrogative form
Simple form
should I alternate? should you alternate? should he alternate? should we alternate? should you alternate? should they alternate?
V-ing form
should I be alternating? should you be alternating? should he be alternating? should we be alternating? should you be alternating? should they be alternating?
Perfect
should I have alternated? should you have alternated? should he have alternated? should we have alternated? should you have alternated? should they have alternated?
V-ing perfect
should I have been alternating? should you have been alternating? should he have been alternating? should we have been alternating? should you have been alternating? should they have been alternating?
Interro-negative form
Simple form
should I not alternate? should you not alternate? should he not alternate? should we not alternate? should you not alternate? should they not alternate?
V-ing form
should I not be alternating? should you not be alternating? should he not be alternating? should we not be alternating? should you not be alternating? should they not be alternating?
Perfect
should I not have alternated? should you not have alternated? should he not have alternated? should we not have alternated? should you not have alternated? should they not have alternated?
V-ing perfect
should I not have been alternating? should you not have been alternating? should he not have been alternating? should we not have been alternating? should you not have been alternating? should they not have been alternating?