English verb conjugation MUST VARY

Regular verb: vary - varied - varied

Affirmation

Simple form

I must vary
you must vary
he must vary
we must vary
you must vary
they must vary

V-ing form

I must be varying
you must be varying
he must be varying
we must be varying
you must be varying
they must be varying

Perfect

I must have varied
you must have varied
he must have varied
we must have varied
you must have varied
they must have varied

V-ing perfect

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

Negation

Simple form

I mustn't vary
you mustn't vary
he mustn't vary
we mustn't vary
you mustn't vary
they mustn't vary

V-ing form

I mustn't be varying
you mustn't be varying
he mustn't be varying
we mustn't be varying
you mustn't be varying
they mustn't be varying

Perfect

I mustn't have varied
you mustn't have varied
he mustn't have varied
we mustn't have varied
you mustn't have varied
they mustn't have varied

V-ing perfect

I mustn't have been varying
you mustn't have been varying
he mustn't have been varying
we mustn't have been varying
you mustn't have been varying
they mustn't have been varying

Interrogative form

Simple form

must I vary?
must you vary?
must he vary?
must we vary?
must you vary?
must they vary?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I vary?
mustn't you vary?
mustn't he vary?
mustn't we vary?
mustn't you vary?
mustn't they vary?

V-ing form

mustn't I be varying?
mustn't you be varying?
mustn't he be varying?
mustn't we be varying?
mustn't you be varying?
mustn't they be varying?

Perfect

mustn't I have varied?
mustn't you have varied?
mustn't he have varied?
mustn't we have varied?
mustn't you have varied?
mustn't they have varied?

V-ing perfect

mustn't I have been varying?
mustn't you have been varying?
mustn't he have been varying?
mustn't we have been varying?
mustn't you have been varying?
mustn't they have been varying?

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