I could dupe you could dupe she could dupe we could dupe you could dupe they could dupe
Forma com V-ing
I could be duping you could be duping she could be duping we could be duping you could be duping they could be duping
Perfeito
I could have duped you could have duped she could have duped we could have duped you could have duped they could have duped
Perfeito com V-ing
I could have been duping you could have been duping she could have been duping we could have been duping you could have been duping they could have been duping
Negação
Forma simple
I could not dupe you could not dupe she could not dupe we could not dupe you could not dupe they could not dupe
Forma com V-ing
I could not be duping you could not be duping she could not be duping we could not be duping you could not be duping they could not be duping
Perfeito
I could not have duped you could not have duped she could not have duped we could not have duped you could not have duped they could not have duped
Perfeito com V-ing
I could not have been duping you could not have been duping she could not have been duping we could not have been duping you could not have been duping they could not have been duping
Forma interrogativa
Forma simple
could I dupe? could you dupe? could she dupe? could we dupe? could you dupe? could they dupe?
Forma com V-ing
could I be duping? could you be duping? could she be duping? could we be duping? could you be duping? could they be duping?
Perfeito
could I have duped? could you have duped? could she have duped? could we have duped? could you have duped? could they have duped?
Perfeito com V-ing
could I have been duping? could you have been duping? could she have been duping? could we have been duping? could you have been duping? could they have been duping?
Forma interro-Negação
Forma simple
could I not dupe? could you not dupe? could she not dupe? could we not dupe? could you not dupe? could they not dupe?
Forma com V-ing
could I not be duping? could you not be duping? could she not be duping? could we not be duping? could you not be duping? could they not be duping?
Perfeito
could I not have duped? could you not have duped? could she not have duped? could we not have duped? could you not have duped? could they not have duped?
Perfeito com V-ing
could I not have been duping? could you not have been duping? could she not have been duping? could we not have been duping? could you not have been duping? could they not have been duping?