I'd be possessing you'd be possessing she'd be possessing we'd be possessing you'd be possessing they'd be possessing
Perfect
I should've possessed you should've possessed she should've possessed we should've possessed you should've possessed they should've possessed
V-ing perfect
I should've been possessing you should've been possessing she should've been possessing we should've been possessing you should've been possessing they should've been possessing
Negation
Simple form
I shouldn't possess you shouldn't possess she shouldn't possess we shouldn't possess you shouldn't possess they shouldn't possess
V-ing form
I shouldn't be possessing you shouldn't be possessing she shouldn't be possessing we shouldn't be possessing you shouldn't be possessing they shouldn't be possessing
Perfect
I shouldn't have possessed you shouldn't have possessed she shouldn't have possessed we shouldn't have possessed you shouldn't have possessed they shouldn't have possessed
V-ing perfect
I shouldn't have been possessing you shouldn't have been possessing she shouldn't have been possessing we shouldn't have been possessing you shouldn't have been possessing they shouldn't have been possessing
Interrogative form
Simple form
should I possess? should you possess? should she possess? should we possess? should you possess? should they possess?
V-ing form
should I be possessing? should you be possessing? should she be possessing? should we be possessing? should you be possessing? should they be possessing?
Perfect
should I have possessed? should you have possessed? should she have possessed? should we have possessed? should you have possessed? should they have possessed?
V-ing perfect
should I have been possessing? should you have been possessing? should she have been possessing? should we have been possessing? should you have been possessing? should they have been possessing?
Interro-negative form
Simple form
shouldn't I possess? shouldn't you possess? shouldn't she possess? shouldn't we possess? shouldn't you possess? shouldn't they possess?
V-ing form
shouldn't I be possessing? shouldn't you be possessing? shouldn't she be possessing? shouldn't we be possessing? shouldn't you be possessing? shouldn't they be possessing?
Perfect
shouldn't I have possessed? shouldn't you have possessed? shouldn't she have possessed? shouldn't we have possessed? shouldn't you have possessed? shouldn't they have possessed?
V-ing perfect
shouldn't I have been possessing? shouldn't you have been possessing? shouldn't she have been possessing? shouldn't we have been possessing? shouldn't you have been possessing? shouldn't they have been possessing?