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