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