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