I'd be discussing you'd be discussing she'd be discussing we'd be discussing you'd be discussing they'd be discussing
Perfect
I should've discussed you should've discussed she 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 she 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 she 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 she 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 she 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 she 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 she discuss? should we discuss? should you discuss? should they discuss?
V-ing form
should I be discussing? should you be discussing? should she be discussing? should we be discussing? should you be discussing? should they be discussing?
Perfect
should I have discussed? should you have discussed? should she 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 she 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 she 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 she 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 she 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 she have been discussing? shouldn't we have been discussing? shouldn't you have been discussing? shouldn't they have been discussing?