English verb conjugation
MUST FLEE

Irregular verb: flee - fled - fled

Affirmation

Simple form	V-ing form
I must flee you must flee he must flee we must flee you must flee they must flee	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	V-ing 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	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	V-ing form
I must not flee you must not flee he must not flee we must not flee you must not flee they must not flee	I must not be fleeing you must not be fleeing he must not be fleeing we must not be fleeing you must not be fleeing they must not be fleeing
Perfect	V-ing perfect
I must not have fled you must not have fled he must not have fled we must not have fled you must not have fled they must not have fled	I must not have been fleeing you must not have been fleeing he must not have been fleeing we must not have been fleeing you must not have been fleeing they must not have been fleeing

Interrogative form

Simple form	V-ing form
must I flee? must you flee? must he flee? must we flee? must you flee? must they flee?	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	V-ing 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?	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	V-ing form
must I not flee? must you not flee? must he not flee? must we not flee? must you not flee? must they not flee?	must I not be fleeing? must you not be fleeing? must he not be fleeing? must we not be fleeing? must you not be fleeing? must they not be fleeing?
Perfect	V-ing perfect
must I not have fled? must you not have fled? must he not have fled? must we not have fled? must you not have fled? must they not have fled?	must I not have been fleeing? must you not have been fleeing? must he not have been fleeing? must we not have been fleeing? must you not have been fleeing? must they not have been fleeing?