must subspecialize
Verbe régulier : subspecialize - subspecialized- subspecialized

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must subspecialize
you must subspecialize
he must subspecialize
we must subspecialize
you must subspecialize
they must subspecialize 	I must be subspecializing
you must be subspecializing
he must be subspecializing
we must be subspecializing
you must be subspecializing
they must be subspecializing	I must have subspecialized
you must have subspecialized
he must have subspecialized
we must have subspecialized
you must have subspecialized
they must have subspecialized	I must have been subspecializing
you must have been subspecializing
he must have been subspecializing
we must have been subspecializing
you must have been subspecializing
they must have been subspecializing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't subspecialize
you mustn't subspecialize
he mustn't subspecialize
we mustn't subspecialize
you mustn't subspecialize
they mustn't subspecialize 	I mustn't be subspecializing
you mustn't be subspecializing
he mustn't be subspecializing
we mustn't be subspecializing
you mustn't be subspecializing
they mustn't be subspecializing	I mustn't have subspecialized
you mustn't have subspecialized
he mustn't have subspecialized
we mustn't have subspecialized
you mustn't have subspecialized
they mustn't have subspecialized	I mustn't have been subspecializing
you mustn't have been subspecializing
he mustn't have been subspecializing
we mustn't have been subspecializing
you mustn't have been subspecializing
they mustn't have been subspecializing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I subspecialize?
must you subspecialize?
must he subspecialize?
must we subspecialize?
must you subspecialize?
must they subspecialize? 	must I be subspecializing?
must you be subspecializing?
must he be subspecializing?
must we be subspecializing?
must you be subspecializing?
must they be subspecializing? 	must I have subspecialized?
must you have subspecialized?
must he have subspecialized?
must we have subspecialized?
must you have subspecialized?
must they have subspecialized? 	must I have been subspecializing?
must you have been subspecializing?
must he have been subspecializing?
must we have been subspecializing?
must you have been subspecializing?
must they have been subspecializing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I subspecialize?
mustn't you subspecialize?
mustn't he subspecialize?
mustn't we subspecialize?
mustn't you subspecialize?
mustn't they subspecialize? 	mustn't I be subspecializing?
mustn't you be subspecializing?
mustn't he be subspecializing?
mustn't we be subspecializing?
mustn't you be subspecializing?
mustn't they be subspecializing? 	mustn't I have subspecialized?
mustn't you have subspecialized?
mustn't he have subspecialized?
mustn't we have subspecialized?
mustn't you have subspecialized?
mustn't they have subspecialized? 	mustn't I have been subspecializing?
mustn't you have been subspecializing?
mustn't he have been subspecializing?
mustn't we have been subspecializing?
mustn't you have been subspecializing?
mustn't they have been subspecializing?