must devitrify
Verbe régulier : devitrify - devitrified- devitrified

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must devitrify
you must devitrify
she must devitrify
we must devitrify
you must devitrify
they must devitrify 	I must be devitrifying
you must be devitrifying
she must be devitrifying
we must be devitrifying
you must be devitrifying
they must be devitrifying	I must have devitrified
you must have devitrified
she must have devitrified
we must have devitrified
you must have devitrified
they must have devitrified	I must have been devitrifying
you must have been devitrifying
she must have been devitrifying
we must have been devitrifying
you must have been devitrifying
they must have been devitrifying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't devitrify
you mustn't devitrify
she mustn't devitrify
we mustn't devitrify
you mustn't devitrify
they mustn't devitrify 	I mustn't be devitrifying
you mustn't be devitrifying
she mustn't be devitrifying
we mustn't be devitrifying
you mustn't be devitrifying
they mustn't be devitrifying	I mustn't have devitrified
you mustn't have devitrified
she mustn't have devitrified
we mustn't have devitrified
you mustn't have devitrified
they mustn't have devitrified	I mustn't have been devitrifying
you mustn't have been devitrifying
she mustn't have been devitrifying
we mustn't have been devitrifying
you mustn't have been devitrifying
they mustn't have been devitrifying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I devitrify?
must you devitrify?
must she devitrify?
must we devitrify?
must you devitrify?
must they devitrify? 	must I be devitrifying?
must you be devitrifying?
must she be devitrifying?
must we be devitrifying?
must you be devitrifying?
must they be devitrifying? 	must I have devitrified?
must you have devitrified?
must she have devitrified?
must we have devitrified?
must you have devitrified?
must they have devitrified? 	must I have been devitrifying?
must you have been devitrifying?
must she have been devitrifying?
must we have been devitrifying?
must you have been devitrifying?
must they have been devitrifying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I devitrify?
mustn't you devitrify?
mustn't she devitrify?
mustn't we devitrify?
mustn't you devitrify?
mustn't they devitrify? 	mustn't I be devitrifying?
mustn't you be devitrifying?
mustn't she be devitrifying?
mustn't we be devitrifying?
mustn't you be devitrifying?
mustn't they be devitrifying? 	mustn't I have devitrified?
mustn't you have devitrified?
mustn't she have devitrified?
mustn't we have devitrified?
mustn't you have devitrified?
mustn't they have devitrified? 	mustn't I have been devitrifying?
mustn't you have been devitrifying?
mustn't she have been devitrifying?
mustn't we have been devitrifying?
mustn't you have been devitrifying?
mustn't they have been devitrifying?