English verb conjugation COULD CRACK

Regular verb: crack - cracked - cracked

Affirmation

Simple form

I could crack
you could crack
he could crack
we could crack
you could crack
they could crack

V-ing form

I could be cracking
you could be cracking
he could be cracking
we could be cracking
you could be cracking
they could be cracking

Perfect

I could have cracked
you could have cracked
he could have cracked
we could have cracked
you could have cracked
they could have cracked

V-ing perfect

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

Negation

Simple form

I could not crack
you could not crack
he could not crack
we could not crack
you could not crack
they could not crack

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I crack?
could you crack?
could he crack?
could we crack?
could you crack?
could they crack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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