English verb conjugation COULD STAMP

Regular verb: stamp - stamped - stamped

Affirmation

Simple form

I could stamp
you could stamp
he could stamp
we could stamp
you could stamp
they could stamp

V-ing form

I could be stamping
you could be stamping
he could be stamping
we could be stamping
you could be stamping
they could be stamping

Perfect

I could have stamped
you could have stamped
he could have stamped
we could have stamped
you could have stamped
they could have stamped

V-ing perfect

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

Negation

Simple form

I could not stamp
you could not stamp
he could not stamp
we could not stamp
you could not stamp
they could not stamp

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I stamp?
could you stamp?
could he stamp?
could we stamp?
could you stamp?
could they stamp?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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