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