can dupe
Regular verb: dupe - duped- duped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can dupe
you can dupe
she can dupe
we can dupe
you can dupe
they can dupe 	I can be duping
you can be duping
she can be duping
we can be duping
you can be duping
they can be duping	I can have duped
you can have duped
she can have duped
we can have duped
you can have duped
they can have duped	I can have been duping
you can have been duping
she can have been duping
we can have been duping
you can have been duping
they can have been duping	

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

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

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