English verb conjugation COULD VALVE

Regular verb: valve - valved - valved

Affirmation

Simple form

I could valve
you could valve
she could valve
we could valve
you could valve
they could valve

V-ing form

I could be valving
you could be valving
she could be valving
we could be valving
you could be valving
they could be valving

Perfect

I could have valved
you could have valved
she could have valved
we could have valved
you could have valved
they could have valved

V-ing perfect

I could have been valving
you could have been valving
she could have been valving
we could have been valving
you could have been valving
they could have been valving

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I valve?
could you valve?
could she valve?
could we valve?
could you valve?
could they valve?

V-ing form

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

Perfect

could I have valved?
could you have valved?
could she have valved?
could we have valved?
could you have valved?
could they have valved?

V-ing perfect

could I have been valving?
could you have been valving?
could she have been valving?
could we have been valving?
could you have been valving?
could they have been valving?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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