I'd be infecting you'd be infecting he'd be infecting we'd be infecting you'd be infecting they'd be infecting
Perfect
I should've infected you should've infected he should've infected we should've infected you should've infected they should've infected
V-ing perfect
I should've been infecting you should've been infecting he should've been infecting we should've been infecting you should've been infecting they should've been infecting
Negation
Simple form
I shouldn't infect you shouldn't infect he shouldn't infect we shouldn't infect you shouldn't infect they shouldn't infect
V-ing form
I shouldn't be infecting you shouldn't be infecting he shouldn't be infecting we shouldn't be infecting you shouldn't be infecting they shouldn't be infecting
Perfect
I shouldn't have infected you shouldn't have infected he shouldn't have infected we shouldn't have infected you shouldn't have infected they shouldn't have infected
V-ing perfect
I shouldn't have been infecting you shouldn't have been infecting he shouldn't have been infecting we shouldn't have been infecting you shouldn't have been infecting they shouldn't have been infecting
Interrogative form
Simple form
should I infect? should you infect? should he infect? should we infect? should you infect? should they infect?
V-ing form
should I be infecting? should you be infecting? should he be infecting? should we be infecting? should you be infecting? should they be infecting?
Perfect
should I have infected? should you have infected? should he have infected? should we have infected? should you have infected? should they have infected?
V-ing perfect
should I have been infecting? should you have been infecting? should he have been infecting? should we have been infecting? should you have been infecting? should they have been infecting?
Interro-negative form
Simple form
shouldn't I infect? shouldn't you infect? shouldn't he infect? shouldn't we infect? shouldn't you infect? shouldn't they infect?
V-ing form
shouldn't I be infecting? shouldn't you be infecting? shouldn't he be infecting? shouldn't we be infecting? shouldn't you be infecting? shouldn't they be infecting?
Perfect
shouldn't I have infected? shouldn't you have infected? shouldn't he have infected? shouldn't we have infected? shouldn't you have infected? shouldn't they have infected?
V-ing perfect
shouldn't I have been infecting? shouldn't you have been infecting? shouldn't he have been infecting? shouldn't we have been infecting? shouldn't you have been infecting? shouldn't they have been infecting?