I'd be bidding you'd be bidding he'd be bidding we'd be bidding you'd be bidding they'd be bidding
Perfect
I should've bid, bidden you should've bid, bidden he should've bid, bidden we should've bid, bidden you should've bid, bidden they should've bid, bidden
V-ing perfect
I should've been bidding you should've been bidding he should've been bidding we should've been bidding you should've been bidding they should've been bidding
Negation
Simple form
I shouldn't bid you shouldn't bid he shouldn't bid we shouldn't bid you shouldn't bid they shouldn't bid
V-ing form
I shouldn't be bidding you shouldn't be bidding he shouldn't be bidding we shouldn't be bidding you shouldn't be bidding they shouldn't be bidding
Perfect
I shouldn't have bid, bidden you shouldn't have bid, bidden he shouldn't have bid, bidden we shouldn't have bid, bidden you shouldn't have bid, bidden they shouldn't have bid, bidden
V-ing perfect
I shouldn't have been bidding you shouldn't have been bidding he shouldn't have been bidding we shouldn't have been bidding you shouldn't have been bidding they shouldn't have been bidding
Interrogative form
Simple form
should I bid? should you bid? should he bid? should we bid? should you bid? should they bid?
V-ing form
should I be bidding? should you be bidding? should he be bidding? should we be bidding? should you be bidding? should they be bidding?
Perfect
should I have bid, bidden? should you have bid, bidden? should he have bid, bidden? should we have bid, bidden? should you have bid, bidden? should they have bid, bidden?
V-ing perfect
should I have been bidding? should you have been bidding? should he have been bidding? should we have been bidding? should you have been bidding? should they have been bidding?
Interro-negative form
Simple form
shouldn't I bid? shouldn't you bid? shouldn't he bid? shouldn't we bid? shouldn't you bid? shouldn't they bid?
V-ing form
shouldn't I be bidding? shouldn't you be bidding? shouldn't he be bidding? shouldn't we be bidding? shouldn't you be bidding? shouldn't they be bidding?
Perfect
shouldn't I have bid, bidden? shouldn't you have bid, bidden? shouldn't he have bid, bidden? shouldn't we have bid, bidden? shouldn't you have bid, bidden? shouldn't they have bid, bidden?
V-ing perfect
shouldn't I have been bidding? shouldn't you have been bidding? shouldn't he have been bidding? shouldn't we have been bidding? shouldn't you have been bidding? shouldn't they have been bidding?