should dupe
Regular verb: dupe - duped- duped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd dupe
you'd dupe
she'd dupe
we'd dupe
you'd dupe
they'd dupe 	I'd be duping
you'd be duping
she'd be duping
we'd be duping
you'd be duping
they'd be duping	I should've duped
you should've duped
she should've duped
we should've duped
you should've duped
they should've duped	I should've been duping
you should've been duping
she should've been duping
we should've been duping
you should've been duping
they should've been duping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't dupe
you shouldn't dupe
she shouldn't dupe
we shouldn't dupe
you shouldn't dupe
they shouldn't dupe 	I shouldn't be duping
you shouldn't be duping
she shouldn't be duping
we shouldn't be duping
you shouldn't be duping
they shouldn't be duping	I shouldn't have duped
you shouldn't have duped
she shouldn't have duped
we shouldn't have duped
you shouldn't have duped
they shouldn't have duped	I shouldn't have been duping
you shouldn't have been duping
she shouldn't have been duping
we shouldn't have been duping
you shouldn't have been duping
they shouldn't have been duping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I dupe?
should you dupe?
should she dupe?
should we dupe?
should you dupe?
should they dupe? 	should I be duping?
should you be duping?
should she be duping?
should we be duping?
should you be duping?
should they be duping? 	should I have duped?
should you have duped?
should she have duped?
should we have duped?
should you have duped?
should they have duped? 	should I have been duping?
should you have been duping?
should she have been duping?
should we have been duping?
should you have been duping?
should they have been duping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I dupe?
shouldn't you dupe?
shouldn't she dupe?
shouldn't we dupe?
shouldn't you dupe?
shouldn't they dupe? 	shouldn't I be duping?
shouldn't you be duping?
shouldn't she be duping?
shouldn't we be duping?
shouldn't you be duping?
shouldn't they be duping? 	shouldn't I have duped?
shouldn't you have duped?
shouldn't she have duped?
shouldn't we have duped?
shouldn't you have duped?
shouldn't they have duped? 	shouldn't I have been duping?
shouldn't you have been duping?
shouldn't she have been duping?
shouldn't we have been duping?
shouldn't you have been duping?
shouldn't they have been duping?