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