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