English verb conjugation COULD VARY

Regular verb: vary - varied - varied

Affirmation

Simple form

I could vary
you could vary
he could vary
we could vary
you could vary
they could vary

V-ing form

I could be varying
you could be varying
he could be varying
we could be varying
you could be varying
they could be varying

Perfect

I could have varied
you could have varied
he could have varied
we could have varied
you could have varied
they could have varied

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I vary?
could you vary?
could he vary?
could we vary?
could you vary?
could they vary?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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