English verb conjugation
MUST HUMIDIFY

Regular verb: humidify - humidified - humidified

Affirmation

Simple form	V-ing form
I must humidify you must humidify she must humidify we must humidify you must humidify they must humidify	I must be humidifying you must be humidifying she must be humidifying we must be humidifying you must be humidifying they must be humidifying
Perfect	V-ing perfect
I must have humidified you must have humidified she must have humidified we must have humidified you must have humidified they must have humidified	I must have been humidifying you must have been humidifying she must have been humidifying we must have been humidifying you must have been humidifying they must have been humidifying

Negation

Simple form	V-ing form
I must not humidify you must not humidify she must not humidify we must not humidify you must not humidify they must not humidify	I must not be humidifying you must not be humidifying she must not be humidifying we must not be humidifying you must not be humidifying they must not be humidifying
Perfect	V-ing perfect
I must not have humidified you must not have humidified she must not have humidified we must not have humidified you must not have humidified they must not have humidified	I must not have been humidifying you must not have been humidifying she must not have been humidifying we must not have been humidifying you must not have been humidifying they must not have been humidifying

Interrogative form

Simple form	V-ing form
must I humidify? must you humidify? must she humidify? must we humidify? must you humidify? must they humidify?	must I be humidifying? must you be humidifying? must she be humidifying? must we be humidifying? must you be humidifying? must they be humidifying?
Perfect	V-ing perfect
must I have humidified? must you have humidified? must she have humidified? must we have humidified? must you have humidified? must they have humidified?	must I have been humidifying? must you have been humidifying? must she have been humidifying? must we have been humidifying? must you have been humidifying? must they have been humidifying?

Interro-negative form

Simple form	V-ing form
must I not humidify? must you not humidify? must she not humidify? must we not humidify? must you not humidify? must they not humidify?	must I not be humidifying? must you not be humidifying? must she not be humidifying? must we not be humidifying? must you not be humidifying? must they not be humidifying?
Perfect	V-ing perfect
must I not have humidified? must you not have humidified? must she not have humidified? must we not have humidified? must you not have humidified? must they not have humidified?	must I not have been humidifying? must you not have been humidifying? must she not have been humidifying? must we not have been humidifying? must you not have been humidifying? must they not have been humidifying?