English verb conjugation COULD BARK

Regular verb: bark - barked - barked

Affirmation

Simple form

I could bark
you could bark
she could bark
we could bark
you could bark
they could bark

V-ing form

I could be barking
you could be barking
she could be barking
we could be barking
you could be barking
they could be barking

Perfect

I could have barked
you could have barked
she 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
she could have been barking
we could have been barking
you could have been barking
they could have been barking

Negation

Simple form

I couldn't bark
you couldn't bark
she couldn't bark
we couldn't bark
you couldn't bark
they couldn't bark

V-ing form

I couldn't be barking
you couldn't be barking
she couldn't be barking
we couldn't be barking
you couldn't be barking
they couldn't be barking

Perfect

I couldn't have barked
you couldn't have barked
she couldn't have barked
we couldn't have barked
you couldn't have barked
they couldn't have barked

V-ing perfect

I couldn't have been barking
you couldn't have been barking
she couldn't have been barking
we couldn't have been barking
you couldn't have been barking
they couldn't have been barking

Interrogative form

Simple form

could I bark?
could you bark?
could she bark?
could we bark?
could you bark?
could they bark?

V-ing form

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

Perfect

could I have barked?
could you have barked?
could she 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 she have been barking?
could we have been barking?
could you have been barking?
could they have been barking?

Interro-negative form

Simple form

couldn't I bark?
couldn't you bark?
couldn't she bark?
couldn't we bark?
couldn't you bark?
couldn't they bark?

V-ing form

couldn't I be barking?
couldn't you be barking?
couldn't she be barking?
couldn't we be barking?
couldn't you be barking?
couldn't they be barking?

Perfect

couldn't I have barked?
couldn't you have barked?
couldn't she have barked?
couldn't we have barked?
couldn't you have barked?
couldn't they have barked?

V-ing perfect

couldn't I have been barking?
couldn't you have been barking?
couldn't she have been barking?
couldn't we have been barking?
couldn't you have been barking?
couldn't they have been barking?

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