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