English verb conjugation MUST CRACK

Regular verb: crack - cracked - cracked

Affirmation

Simple form

I must crack
you must crack
he must crack
we must crack
you must crack
they must crack

V-ing form

I must be cracking
you must be cracking
he must be cracking
we must be cracking
you must be cracking
they must be cracking

Perfect

I must have cracked
you must have cracked
he must have cracked
we must have cracked
you must have cracked
they must have cracked

V-ing perfect

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

Negation

Simple form

I must not crack
you must not crack
he must not crack
we must not crack
you must not crack
they must not crack

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I crack?
must you crack?
must he crack?
must we crack?
must you crack?
must they crack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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