English verb conjugation COULD PRESTAMP

Regular verb: prestamp - prestamped - prestamped

Affirmation

Simple form

I could prestamp
you could prestamp
he could prestamp
we could prestamp
you could prestamp
they could prestamp

V-ing form

I could be prestamping
you could be prestamping
he could be prestamping
we could be prestamping
you could be prestamping
they could be prestamping

Perfect

I could have prestamped
you could have prestamped
he could have prestamped
we could have prestamped
you could have prestamped
they could have prestamped

V-ing perfect

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

Negation

Simple form

I couldn't prestamp
you couldn't prestamp
he couldn't prestamp
we couldn't prestamp
you couldn't prestamp
they couldn't prestamp

V-ing form

I couldn't be prestamping
you couldn't be prestamping
he couldn't be prestamping
we couldn't be prestamping
you couldn't be prestamping
they couldn't be prestamping

Perfect

I couldn't have prestamped
you couldn't have prestamped
he couldn't have prestamped
we couldn't have prestamped
you couldn't have prestamped
they couldn't have prestamped

V-ing perfect

I couldn't have been prestamping
you couldn't have been prestamping
he couldn't have been prestamping
we couldn't have been prestamping
you couldn't have been prestamping
they couldn't have been prestamping

Interrogative form

Simple form

could I prestamp?
could you prestamp?
could he prestamp?
could we prestamp?
could you prestamp?
could they prestamp?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I prestamp?
couldn't you prestamp?
couldn't he prestamp?
couldn't we prestamp?
couldn't you prestamp?
couldn't they prestamp?

V-ing form

couldn't I be prestamping?
couldn't you be prestamping?
couldn't he be prestamping?
couldn't we be prestamping?
couldn't you be prestamping?
couldn't they be prestamping?

Perfect

couldn't I have prestamped?
couldn't you have prestamped?
couldn't he have prestamped?
couldn't we have prestamped?
couldn't you have prestamped?
couldn't they have prestamped?

V-ing perfect

couldn't I have been prestamping?
couldn't you have been prestamping?
couldn't he have been prestamping?
couldn't we have been prestamping?
couldn't you have been prestamping?
couldn't they have been prestamping?

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