English verb conjugation COULD VALIDATE

Regular verb: validate - validated - validated

Affirmation

Simple form

I could validate
you could validate
he could validate
we could validate
you could validate
they could validate

V-ing form

I could be validating
you could be validating
he could be validating
we could be validating
you could be validating
they could be validating

Perfect

I could have validated
you could have validated
he could have validated
we could have validated
you could have validated
they could have validated

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I validate?
could you validate?
could he validate?
could we validate?
could you validate?
could they validate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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