I'd be investing you'd be investing she'd be investing we'd be investing you'd be investing they'd be investing
Perfect
I should've invested you should've invested she 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 she 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 she 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 she 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 she 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 she 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 she invest? should we invest? should you invest? should they invest?
V-ing form
should I be investing? should you be investing? should she be investing? should we be investing? should you be investing? should they be investing?
Perfect
should I have invested? should you have invested? should she 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 she 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 she 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 she 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 she 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 she have been investing? shouldn't we have been investing? shouldn't you have been investing? shouldn't they have been investing?