English verb conjugation COULD BARK

Regular verb: bark - barked - barked

Affirmation

Simple form

I could bark
you could bark
he could bark
we could bark
you could bark
they could bark

V-ing form

I could be barking
you could be barking
he could be barking
we could be barking
you could be barking
they could be barking

Perfect

I could have barked
you could have barked
he could have barked
we could have barked
you could have barked
they could have barked

V-ing perfect

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

Negation

Simple form

I could not bark
you could not bark
he could not bark
we could not bark
you could not bark
they could not bark

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I bark?
could you bark?
could he bark?
could we bark?
could you bark?
could they bark?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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