English verb conjugation MUST FLEE

Irregular verb: flee - fled - fled

Affirmation

Simple form

I must flee
you must flee
he must flee
we must flee
you must flee
they must flee

V-ing form

I must be fleeing
you must be fleeing
he must be fleeing
we must be fleeing
you must be fleeing
they must be fleeing

Perfect

I must have fled
you must have fled
he must have fled
we must have fled
you must have fled
they must have fled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I flee?
must you flee?
must he flee?
must we flee?
must you flee?
must they flee?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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