English verb conjugation MUST VAIL

Regular verb: vail - vailed - vailed

Affirmation

Simple form

I must vail
you must vail
he must vail
we must vail
you must vail
they must vail

V-ing form

I must be vailing
you must be vailing
he must be vailing
we must be vailing
you must be vailing
they must be vailing

Perfect

I must have vailed
you must have vailed
he must have vailed
we must have vailed
you must have vailed
they must have vailed

V-ing perfect

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

Negation

Simple form

I must not vail
you must not vail
he must not vail
we must not vail
you must not vail
they must not vail

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I vail?
must you vail?
must he vail?
must we vail?
must you vail?
must they vail?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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