English verb conjugation
MUST HUMIDIFY

Regular verb: humidify - humidified - humidified

Affirmation

Simple form	V-ing form
I must humidify you must humidify he must humidify we must humidify you must humidify they must humidify	I must be humidifying you must be humidifying he 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 he 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 he 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 he 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 he 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 he 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 he 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 he humidify? must we humidify? must you humidify? must they humidify?	must I be humidifying? must you be humidifying? must he 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 he 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 he 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 he 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 he 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 he 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 he not have been humidifying? must we not have been humidifying? must you not have been humidifying? must they not have been humidifying?