English verb conjugation COULD AVOUCH

Regular verb: avouch - avouched - avouched

Affirmation

Simple form

I could avouch
you could avouch
he could avouch
we could avouch
you could avouch
they could avouch

V-ing form

I could be avouching
you could be avouching
he could be avouching
we could be avouching
you could be avouching
they could be avouching

Perfect

I could have avouched
you could have avouched
he could have avouched
we could have avouched
you could have avouched
they could have avouched

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I avouch?
could you avouch?
could he avouch?
could we avouch?
could you avouch?
could they avouch?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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