English verb conjugation COULD DISPROVE

Regular verb: disprove - disproved - disproved

Affirmation

Simple form

I could disprove
you could disprove
he could disprove
we could disprove
you could disprove
they could disprove

V-ing form

I could be disproving
you could be disproving
he could be disproving
we could be disproving
you could be disproving
they could be disproving

Perfect

I could have disproved
you could have disproved
he could have disproved
we could have disproved
you could have disproved
they could have disproved

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I disprove?
could you disprove?
could he disprove?
could we disprove?
could you disprove?
could they disprove?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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