English verb conjugation COULD FROWN

Regular verb: frown - frowned - frowned

Affirmation

Simple form

I could frown
you could frown
he could frown
we could frown
you could frown
they could frown

V-ing form

I could be frowning
you could be frowning
he could be frowning
we could be frowning
you could be frowning
they could be frowning

Perfect

I could have frowned
you could have frowned
he could have frowned
we could have frowned
you could have frowned
they could have frowned

V-ing perfect

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

Negation

Simple form

I could not frown
you could not frown
he could not frown
we could not frown
you could not frown
they could not frown

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I frown?
could you frown?
could he frown?
could we frown?
could you frown?
could they frown?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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