English verb conjugation COULD DUPE

Regular verb: dupe - duped - duped

Affirmation

Simple form

I could dupe
you could dupe
he could dupe
we could dupe
you could dupe
they could dupe

V-ing form

I could be duping
you could be duping
he could be duping
we could be duping
you could be duping
they could be duping

Perfect

I could have duped
you could have duped
he could have duped
we could have duped
you could have duped
they could have duped

V-ing perfect

I could have been duping
you could have been duping
he could have been duping
we could have been duping
you could have been duping
they could have been duping

Negation

Simple form

I could not dupe
you could not dupe
he could not dupe
we could not dupe
you could not dupe
they could not dupe

V-ing form

I could not be duping
you could not be duping
he could not be duping
we could not be duping
you could not be duping
they could not be duping

Perfect

I could not have duped
you could not have duped
he could not have duped
we could not have duped
you could not have duped
they could not have duped

V-ing perfect

I could not have been duping
you could not have been duping
he could not have been duping
we could not have been duping
you could not have been duping
they could not have been duping

Interrogative form

Simple form

could I dupe?
could you dupe?
could he dupe?
could we dupe?
could you dupe?
could they dupe?

V-ing form

could I be duping?
could you be duping?
could he be duping?
could we be duping?
could you be duping?
could they be duping?

Perfect

could I have duped?
could you have duped?
could he have duped?
could we have duped?
could you have duped?
could they have duped?

V-ing perfect

could I have been duping?
could you have been duping?
could he have been duping?
could we have been duping?
could you have been duping?
could they have been duping?

Interro-negative form

Simple form

could I not dupe?
could you not dupe?
could he not dupe?
could we not dupe?
could you not dupe?
could they not dupe?

V-ing form

could I not be duping?
could you not be duping?
could he not be duping?
could we not be duping?
could you not be duping?
could they not be duping?

Perfect

could I not have duped?
could you not have duped?
could he not have duped?
could we not have duped?
could you not have duped?
could they not have duped?

V-ing perfect

could I not have been duping?
could you not have been duping?
could he not have been duping?
could we not have been duping?
could you not have been duping?
could they not have been duping?

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