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