I'd be expressing you'd be expressing he'd be expressing we'd be expressing you'd be expressing they'd be expressing
Perfect
I should've expressed you should've expressed he 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 he 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 he 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 he 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 he 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 he 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 he express? should we express? should you express? should they express?
V-ing form
should I be expressing? should you be expressing? should he be expressing? should we be expressing? should you be expressing? should they be expressing?
Perfect
should I have expressed? should you have expressed? should he 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 he 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 he 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 he 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 he 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 he have been expressing? shouldn't we have been expressing? shouldn't you have been expressing? shouldn't they have been expressing?