I'd be expressing you'd be expressing she'd be expressing we'd be expressing you'd be expressing they'd be expressing
Perfect
I should've expressed you should've expressed she should've expressed we should've expressed you should've expressed they should've expressed
V-ing perfect
I should've been expressing you should've been expressing she should've been expressing we should've been expressing you should've been expressing they should've been expressing
Negation
Simple form
I shouldn't express you shouldn't express she shouldn't express we shouldn't express you shouldn't express they shouldn't express
V-ing form
I shouldn't be expressing you shouldn't be expressing she shouldn't be expressing we shouldn't be expressing you shouldn't be expressing they shouldn't be expressing
Perfect
I shouldn't have expressed you shouldn't have expressed she shouldn't have expressed we shouldn't have expressed you shouldn't have expressed they shouldn't have expressed
V-ing perfect
I shouldn't have been expressing you shouldn't have been expressing she shouldn't have been expressing we shouldn't have been expressing you shouldn't have been expressing they shouldn't have been expressing
Interrogative form
Simple form
should I express? should you express? should she express? should we express? should you express? should they express?
V-ing form
should I be expressing? should you be expressing? should she be expressing? should we be expressing? should you be expressing? should they be expressing?
Perfect
should I have expressed? should you have expressed? should she have expressed? should we have expressed? should you have expressed? should they have expressed?
V-ing perfect
should I have been expressing? should you have been expressing? should she have been expressing? should we have been expressing? should you have been expressing? should they have been expressing?
Interro-negative form
Simple form
shouldn't I express? shouldn't you express? shouldn't she express? shouldn't we express? shouldn't you express? shouldn't they express?
V-ing form
shouldn't I be expressing? shouldn't you be expressing? shouldn't she be expressing? shouldn't we be expressing? shouldn't you be expressing? shouldn't they be expressing?
Perfect
shouldn't I have expressed? shouldn't you have expressed? shouldn't she have expressed? shouldn't we have expressed? shouldn't you have expressed? shouldn't they have expressed?
V-ing perfect
shouldn't I have been expressing? shouldn't you have been expressing? shouldn't she have been expressing? shouldn't we have been expressing? shouldn't you have been expressing? shouldn't they have been expressing?