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 must not devitrify
you must not devitrify
she must not devitrify
we must not devitrify
you must not devitrify
they must not devitrify 	I must not be devitrifying
you must not be devitrifying
she must not be devitrifying
we must not be devitrifying
you must not be devitrifying
they must not be devitrifying	I must not have devitrified
you must not have devitrified
she must not have devitrified
we must not have devitrified
you must not have devitrified
they must not have devitrified	I must not have been devitrifying
you must not have been devitrifying
she must not have been devitrifying
we must not have been devitrifying
you must not have been devitrifying
they must not 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 	
must I not devitrify?
must you not devitrify?
must she not devitrify?
must we not devitrify?
must you not devitrify?
must they not devitrify? 	must I not be devitrifying?
must you not be devitrifying?
must she not be devitrifying?
must we not be devitrifying?
must you not be devitrifying?
must they not be devitrifying? 	must I not have devitrified?
must you not have devitrified?
must she not have devitrified?
must we not have devitrified?
must you not have devitrified?
must they not have devitrified? 	must I not have been devitrifying?
must you not have been devitrifying?
must she not have been devitrifying?
must we not have been devitrifying?
must you not have been devitrifying?
must they not have been devitrifying?