English verb conjugation COULD DOWN

Regular verb: down - downed - downed

Affirmation

Simple form

I could down
you could down
he could down
we could down
you could down
they could down

V-ing form

I could be downing
you could be downing
he could be downing
we could be downing
you could be downing
they could be downing

Perfect

I could have downed
you could have downed
he could have downed
we could have downed
you could have downed
they could have downed

V-ing perfect

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

Negation

Simple form

I could not down
you could not down
he could not down
we could not down
you could not down
they could not down

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I down?
could you down?
could he down?
could we down?
could you down?
could they down?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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