must malfunction
Verbe régulier : malfunction - malfunctioned- malfunctioned
Traduction française : mal fonctionner - tomber en panne 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must malfunction
you must malfunction
she must malfunction
we must malfunction
you must malfunction
they must malfunction 	I must be malfunctioning
you must be malfunctioning
she must be malfunctioning
we must be malfunctioning
you must be malfunctioning
they must be malfunctioning	I must have malfunctioned
you must have malfunctioned
she must have malfunctioned
we must have malfunctioned
you must have malfunctioned
they must have malfunctioned	I must have been malfunctioning
you must have been malfunctioning
she must have been malfunctioning
we must have been malfunctioning
you must have been malfunctioning
they must have been malfunctioning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't malfunction
you mustn't malfunction
she mustn't malfunction
we mustn't malfunction
you mustn't malfunction
they mustn't malfunction 	I mustn't be malfunctioning
you mustn't be malfunctioning
she mustn't be malfunctioning
we mustn't be malfunctioning
you mustn't be malfunctioning
they mustn't be malfunctioning	I mustn't have malfunctioned
you mustn't have malfunctioned
she mustn't have malfunctioned
we mustn't have malfunctioned
you mustn't have malfunctioned
they mustn't have malfunctioned	I mustn't have been malfunctioning
you mustn't have been malfunctioning
she mustn't have been malfunctioning
we mustn't have been malfunctioning
you mustn't have been malfunctioning
they mustn't have been malfunctioning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I malfunction?
must you malfunction?
must she malfunction?
must we malfunction?
must you malfunction?
must they malfunction? 	must I be malfunctioning?
must you be malfunctioning?
must she be malfunctioning?
must we be malfunctioning?
must you be malfunctioning?
must they be malfunctioning? 	must I have malfunctioned?
must you have malfunctioned?
must she have malfunctioned?
must we have malfunctioned?
must you have malfunctioned?
must they have malfunctioned? 	must I have been malfunctioning?
must you have been malfunctioning?
must she have been malfunctioning?
must we have been malfunctioning?
must you have been malfunctioning?
must they have been malfunctioning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I malfunction?
mustn't you malfunction?
mustn't she malfunction?
mustn't we malfunction?
mustn't you malfunction?
mustn't they malfunction? 	mustn't I be malfunctioning?
mustn't you be malfunctioning?
mustn't she be malfunctioning?
mustn't we be malfunctioning?
mustn't you be malfunctioning?
mustn't they be malfunctioning? 	mustn't I have malfunctioned?
mustn't you have malfunctioned?
mustn't she have malfunctioned?
mustn't we have malfunctioned?
mustn't you have malfunctioned?
mustn't they have malfunctioned? 	mustn't I have been malfunctioning?
mustn't you have been malfunctioning?
mustn't she have been malfunctioning?
mustn't we have been malfunctioning?
mustn't you have been malfunctioning?
mustn't they have been malfunctioning?