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