English verb conjugation COULD UNTACK

Regular verb: untack - untacked - untacked

Affirmation

Simple form

I could untack
you could untack
he could untack
we could untack
you could untack
they could untack

V-ing form

I could be untacking
you could be untacking
he could be untacking
we could be untacking
you could be untacking
they could be untacking

Perfect

I could have untacked
you could have untacked
he could have untacked
we could have untacked
you could have untacked
they could have untacked

V-ing perfect

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

Negation

Simple form

I could not untack
you could not untack
he could not untack
we could not untack
you could not untack
they could not untack

V-ing form

I could not be untacking
you could not be untacking
he could not be untacking
we could not be untacking
you could not be untacking
they could not be untacking

Perfect

I could not have untacked
you could not have untacked
he could not have untacked
we could not have untacked
you could not have untacked
they could not have untacked

V-ing perfect

I could not have been untacking
you could not have been untacking
he could not have been untacking
we could not have been untacking
you could not have been untacking
they could not have been untacking

Interrogative form

Simple form

could I untack?
could you untack?
could he untack?
could we untack?
could you untack?
could they untack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not untack?
could you not untack?
could he not untack?
could we not untack?
could you not untack?
could they not untack?

V-ing form

could I not be untacking?
could you not be untacking?
could he not be untacking?
could we not be untacking?
could you not be untacking?
could they not be untacking?

Perfect

could I not have untacked?
could you not have untacked?
could he not have untacked?
could we not have untacked?
could you not have untacked?
could they not have untacked?

V-ing perfect

could I not have been untacking?
could you not have been untacking?
could he not have been untacking?
could we not have been untacking?
could you not have been untacking?
could they not have been untacking?

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