should scan
Regular verb: scan - scanned- scanned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd scan
you'd scan
she'd scan
we'd scan
you'd scan
they'd scan 	I'd be scanning
you'd be scanning
she'd be scanning
we'd be scanning
you'd be scanning
they'd be scanning	I should've scanned
you should've scanned
she should've scanned
we should've scanned
you should've scanned
they should've scanned	I should've been scanning
you should've been scanning
she should've been scanning
we should've been scanning
you should've been scanning
they should've been scanning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't scan
you shouldn't scan
she shouldn't scan
we shouldn't scan
you shouldn't scan
they shouldn't scan 	I shouldn't be scanning
you shouldn't be scanning
she shouldn't be scanning
we shouldn't be scanning
you shouldn't be scanning
they shouldn't be scanning	I shouldn't have scanned
you shouldn't have scanned
she shouldn't have scanned
we shouldn't have scanned
you shouldn't have scanned
they shouldn't have scanned	I shouldn't have been scanning
you shouldn't have been scanning
she shouldn't have been scanning
we shouldn't have been scanning
you shouldn't have been scanning
they shouldn't have been scanning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I scan?
should you scan?
should she scan?
should we scan?
should you scan?
should they scan? 	should I be scanning?
should you be scanning?
should she be scanning?
should we be scanning?
should you be scanning?
should they be scanning? 	should I have scanned?
should you have scanned?
should she have scanned?
should we have scanned?
should you have scanned?
should they have scanned? 	should I have been scanning?
should you have been scanning?
should she have been scanning?
should we have been scanning?
should you have been scanning?
should they have been scanning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I scan?
shouldn't you scan?
shouldn't she scan?
shouldn't we scan?
shouldn't you scan?
shouldn't they scan? 	shouldn't I be scanning?
shouldn't you be scanning?
shouldn't she be scanning?
shouldn't we be scanning?
shouldn't you be scanning?
shouldn't they be scanning? 	shouldn't I have scanned?
shouldn't you have scanned?
shouldn't she have scanned?
shouldn't we have scanned?
shouldn't you have scanned?
shouldn't they have scanned? 	shouldn't I have been scanning?
shouldn't you have been scanning?
shouldn't she have been scanning?
shouldn't we have been scanning?
shouldn't you have been scanning?
shouldn't they have been scanning?