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 must not malfunction
you must not malfunction
she must not malfunction
we must not malfunction
you must not malfunction
they must not malfunction 	I must not be malfunctioning
you must not be malfunctioning
she must not be malfunctioning
we must not be malfunctioning
you must not be malfunctioning
they must not be malfunctioning	I must not have malfunctioned
you must not have malfunctioned
she must not have malfunctioned
we must not have malfunctioned
you must not have malfunctioned
they must not have malfunctioned	I must not have been malfunctioning
you must not have been malfunctioning
she must not have been malfunctioning
we must not have been malfunctioning
you must not have been malfunctioning
they must not 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 	
must I not malfunction?
must you not malfunction?
must she not malfunction?
must we not malfunction?
must you not malfunction?
must they not malfunction? 	must I not be malfunctioning?
must you not be malfunctioning?
must she not be malfunctioning?
must we not be malfunctioning?
must you not be malfunctioning?
must they not be malfunctioning? 	must I not have malfunctioned?
must you not have malfunctioned?
must she not have malfunctioned?
must we not have malfunctioned?
must you not have malfunctioned?
must they not have malfunctioned? 	must I not have been malfunctioning?
must you not have been malfunctioning?
must she not have been malfunctioning?
must we not have been malfunctioning?
must you not have been malfunctioning?
must they not have been malfunctioning?