English verb conjugation COULD UNTIE

Regular verb: untie - untied - untied

Affirmation

Simple form

I could untie
you could untie
he could untie
we could untie
you could untie
they could untie

V-ing form

I could be untying
you could be untying
he could be untying
we could be untying
you could be untying
they could be untying

Perfect

I could have untied
you could have untied
he could have untied
we could have untied
you could have untied
they could have untied

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I untie?
could you untie?
could he untie?
could we untie?
could you untie?
could they untie?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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