must unshell
Verbe régulier : unshell - unshelled- unshelled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must unshell
you must unshell
he must unshell
we must unshell
you must unshell
they must unshell 	I must be unshelling
you must be unshelling
he must be unshelling
we must be unshelling
you must be unshelling
they must be unshelling	I must have unshelled
you must have unshelled
he must have unshelled
we must have unshelled
you must have unshelled
they must have unshelled	I must have been unshelling
you must have been unshelling
he must have been unshelling
we must have been unshelling
you must have been unshelling
they must have been unshelling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't unshell
you mustn't unshell
he mustn't unshell
we mustn't unshell
you mustn't unshell
they mustn't unshell 	I mustn't be unshelling
you mustn't be unshelling
he mustn't be unshelling
we mustn't be unshelling
you mustn't be unshelling
they mustn't be unshelling	I mustn't have unshelled
you mustn't have unshelled
he mustn't have unshelled
we mustn't have unshelled
you mustn't have unshelled
they mustn't have unshelled	I mustn't have been unshelling
you mustn't have been unshelling
he mustn't have been unshelling
we mustn't have been unshelling
you mustn't have been unshelling
they mustn't have been unshelling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I unshell?
must you unshell?
must he unshell?
must we unshell?
must you unshell?
must they unshell? 	must I be unshelling?
must you be unshelling?
must he be unshelling?
must we be unshelling?
must you be unshelling?
must they be unshelling? 	must I have unshelled?
must you have unshelled?
must he have unshelled?
must we have unshelled?
must you have unshelled?
must they have unshelled? 	must I have been unshelling?
must you have been unshelling?
must he have been unshelling?
must we have been unshelling?
must you have been unshelling?
must they have been unshelling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I unshell?
mustn't you unshell?
mustn't he unshell?
mustn't we unshell?
mustn't you unshell?
mustn't they unshell? 	mustn't I be unshelling?
mustn't you be unshelling?
mustn't he be unshelling?
mustn't we be unshelling?
mustn't you be unshelling?
mustn't they be unshelling? 	mustn't I have unshelled?
mustn't you have unshelled?
mustn't he have unshelled?
mustn't we have unshelled?
mustn't you have unshelled?
mustn't they have unshelled? 	mustn't I have been unshelling?
mustn't you have been unshelling?
mustn't he have been unshelling?
mustn't we have been unshelling?
mustn't you have been unshelling?
mustn't they have been unshelling?