English verb conjugation
MUST DEVITALIZE

Regular verb: devitalize - devitalized - devitalized

Affirmation

Simple form	V-ing form
I must devitalize you must devitalize he must devitalize we must devitalize you must devitalize they must devitalize	I must be devitalizing you must be devitalizing he must be devitalizing we must be devitalizing you must be devitalizing they must be devitalizing
Perfect	V-ing perfect
I must have devitalized you must have devitalized he must have devitalized we must have devitalized you must have devitalized they must have devitalized	I must have been devitalizing you must have been devitalizing he must have been devitalizing we must have been devitalizing you must have been devitalizing they must have been devitalizing

Negation

Simple form	V-ing form
I mustn't devitalize you mustn't devitalize he mustn't devitalize we mustn't devitalize you mustn't devitalize they mustn't devitalize	I mustn't be devitalizing you mustn't be devitalizing he mustn't be devitalizing we mustn't be devitalizing you mustn't be devitalizing they mustn't be devitalizing
Perfect	V-ing perfect
I mustn't have devitalized you mustn't have devitalized he mustn't have devitalized we mustn't have devitalized you mustn't have devitalized they mustn't have devitalized	I mustn't have been devitalizing you mustn't have been devitalizing he mustn't have been devitalizing we mustn't have been devitalizing you mustn't have been devitalizing they mustn't have been devitalizing

Interrogative form

Simple form	V-ing form
must I devitalize? must you devitalize? must he devitalize? must we devitalize? must you devitalize? must they devitalize?	must I be devitalizing? must you be devitalizing? must he be devitalizing? must we be devitalizing? must you be devitalizing? must they be devitalizing?
Perfect	V-ing perfect
must I have devitalized? must you have devitalized? must he have devitalized? must we have devitalized? must you have devitalized? must they have devitalized?	must I have been devitalizing? must you have been devitalizing? must he have been devitalizing? must we have been devitalizing? must you have been devitalizing? must they have been devitalizing?

Interro-negative form

Simple form	V-ing form
mustn't I devitalize? mustn't you devitalize? mustn't he devitalize? mustn't we devitalize? mustn't you devitalize? mustn't they devitalize?	mustn't I be devitalizing? mustn't you be devitalizing? mustn't he be devitalizing? mustn't we be devitalizing? mustn't you be devitalizing? mustn't they be devitalizing?
Perfect	V-ing perfect
mustn't I have devitalized? mustn't you have devitalized? mustn't he have devitalized? mustn't we have devitalized? mustn't you have devitalized? mustn't they have devitalized?	mustn't I have been devitalizing? mustn't you have been devitalizing? mustn't he have been devitalizing? mustn't we have been devitalizing? mustn't you have been devitalizing? mustn't they have been devitalizing?