must detrain
Verbe régulier : detrain - detrained- detrained

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must detrain
you must detrain
she must detrain
we must detrain
you must detrain
they must detrain 	I must be detraining
you must be detraining
she must be detraining
we must be detraining
you must be detraining
they must be detraining	I must have detrained
you must have detrained
she must have detrained
we must have detrained
you must have detrained
they must have detrained	I must have been detraining
you must have been detraining
she must have been detraining
we must have been detraining
you must have been detraining
they must have been detraining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't detrain
you mustn't detrain
she mustn't detrain
we mustn't detrain
you mustn't detrain
they mustn't detrain 	I mustn't be detraining
you mustn't be detraining
she mustn't be detraining
we mustn't be detraining
you mustn't be detraining
they mustn't be detraining	I mustn't have detrained
you mustn't have detrained
she mustn't have detrained
we mustn't have detrained
you mustn't have detrained
they mustn't have detrained	I mustn't have been detraining
you mustn't have been detraining
she mustn't have been detraining
we mustn't have been detraining
you mustn't have been detraining
they mustn't have been detraining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I detrain?
must you detrain?
must she detrain?
must we detrain?
must you detrain?
must they detrain? 	must I be detraining?
must you be detraining?
must she be detraining?
must we be detraining?
must you be detraining?
must they be detraining? 	must I have detrained?
must you have detrained?
must she have detrained?
must we have detrained?
must you have detrained?
must they have detrained? 	must I have been detraining?
must you have been detraining?
must she have been detraining?
must we have been detraining?
must you have been detraining?
must they have been detraining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I detrain?
mustn't you detrain?
mustn't she detrain?
mustn't we detrain?
mustn't you detrain?
mustn't they detrain? 	mustn't I be detraining?
mustn't you be detraining?
mustn't she be detraining?
mustn't we be detraining?
mustn't you be detraining?
mustn't they be detraining? 	mustn't I have detrained?
mustn't you have detrained?
mustn't she have detrained?
mustn't we have detrained?
mustn't you have detrained?
mustn't they have detrained? 	mustn't I have been detraining?
mustn't you have been detraining?
mustn't she have been detraining?
mustn't we have been detraining?
mustn't you have been detraining?
mustn't they have been detraining?