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 mustn't humidify you mustn't humidify he mustn't humidify we mustn't humidify you mustn't humidify they mustn't humidify	I mustn't be humidifying you mustn't be humidifying he mustn't be humidifying we mustn't be humidifying you mustn't be humidifying they mustn't be humidifying
Perfect	V-ing perfect
I mustn't have humidified you mustn't have humidified he mustn't have humidified we mustn't have humidified you mustn't have humidified they mustn't have humidified	I mustn't have been humidifying you mustn't have been humidifying he mustn't have been humidifying we mustn't have been humidifying you mustn't have been humidifying they mustn't 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
mustn't I humidify? mustn't you humidify? mustn't he humidify? mustn't we humidify? mustn't you humidify? mustn't they humidify?	mustn't I be humidifying? mustn't you be humidifying? mustn't he be humidifying? mustn't we be humidifying? mustn't you be humidifying? mustn't they be humidifying?
Perfect	V-ing perfect
mustn't I have humidified? mustn't you have humidified? mustn't he have humidified? mustn't we have humidified? mustn't you have humidified? mustn't they have humidified?	mustn't I have been humidifying? mustn't you have been humidifying? mustn't he have been humidifying? mustn't we have been humidifying? mustn't you have been humidifying? mustn't they have been humidifying?