can dupe
Regular verb: dupe - duped- duped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can dupe
you can dupe
he can dupe
we can dupe
you can dupe
they can dupe 	I can be duping
you can be duping
he can be duping
we can be duping
you can be duping
they can be duping	I can have duped
you can have duped
he 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
he 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 cannot dupe
you cannot dupe
he cannot dupe
we cannot dupe
you cannot dupe
they cannot dupe 	I cannot be duping
you cannot be duping
he cannot be duping
we cannot be duping
you cannot be duping
they cannot be duping	I cannot have duped
you cannot have duped
he cannot have duped
we cannot have duped
you cannot have duped
they cannot have duped	I cannot have been duping
you cannot have been duping
he cannot have been duping
we cannot have been duping
you cannot have been duping
they cannot have been duping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I dupe?
can you dupe?
can he dupe?
can we dupe?
can you dupe?
can they dupe? 	can I be duping?
can you be duping?
can he be duping?
can we be duping?
can you be duping?
can they be duping? 	can I have duped?
can you have duped?
can he 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 he 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 I not dupe?
can you not dupe?
can he not dupe?
can we not dupe?
can you not dupe?
can they not dupe? 	can I not be duping?
can you not be duping?
can he not be duping?
can we not be duping?
can you not be duping?
can they not be duping? 	can I not have duped?
can you not have duped?
can he not have duped?
can we not have duped?
can you not have duped?
can they not have duped? 	can I not have been duping?
can you not have been duping?
can he not have been duping?
can we not have been duping?
can you not have been duping?
can they not have been duping?