I'd be alternating you'd be alternating he'd be alternating we'd be alternating you'd be alternating they'd be alternating
Perfect
I should've alternated you should've alternated he should've alternated we should've alternated you should've alternated they should've alternated
V-ing perfect
I should've been alternating you should've been alternating he should've been alternating we should've been alternating you should've been alternating they should've been alternating
Negation
Simple form
I shouldn't alternate you shouldn't alternate he shouldn't alternate we shouldn't alternate you shouldn't alternate they shouldn't alternate
V-ing form
I shouldn't be alternating you shouldn't be alternating he shouldn't be alternating we shouldn't be alternating you shouldn't be alternating they shouldn't be alternating
Perfect
I shouldn't have alternated you shouldn't have alternated he shouldn't have alternated we shouldn't have alternated you shouldn't have alternated they shouldn't have alternated
V-ing perfect
I shouldn't have been alternating you shouldn't have been alternating he shouldn't have been alternating we shouldn't have been alternating you shouldn't have been alternating they shouldn't 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
shouldn't I alternate? shouldn't you alternate? shouldn't he alternate? shouldn't we alternate? shouldn't you alternate? shouldn't they alternate?
V-ing form
shouldn't I be alternating? shouldn't you be alternating? shouldn't he be alternating? shouldn't we be alternating? shouldn't you be alternating? shouldn't they be alternating?
Perfect
shouldn't I have alternated? shouldn't you have alternated? shouldn't he have alternated? shouldn't we have alternated? shouldn't you have alternated? shouldn't they have alternated?
V-ing perfect
shouldn't I have been alternating? shouldn't you have been alternating? shouldn't he have been alternating? shouldn't we have been alternating? shouldn't you have been alternating? shouldn't they have been alternating?