must impugn
Verbe régulier : impugn - impugned- impugned
Traduction française : contester 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must impugn
you must impugn
he must impugn
we must impugn
you must impugn
they must impugn 	I must be impugning
you must be impugning
he must be impugning
we must be impugning
you must be impugning
they must be impugning	I must have impugned
you must have impugned
he must have impugned
we must have impugned
you must have impugned
they must have impugned	I must have been impugning
you must have been impugning
he must have been impugning
we must have been impugning
you must have been impugning
they must have been impugning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't impugn
you mustn't impugn
he mustn't impugn
we mustn't impugn
you mustn't impugn
they mustn't impugn 	I mustn't be impugning
you mustn't be impugning
he mustn't be impugning
we mustn't be impugning
you mustn't be impugning
they mustn't be impugning	I mustn't have impugned
you mustn't have impugned
he mustn't have impugned
we mustn't have impugned
you mustn't have impugned
they mustn't have impugned	I mustn't have been impugning
you mustn't have been impugning
he mustn't have been impugning
we mustn't have been impugning
you mustn't have been impugning
they mustn't have been impugning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I impugn?
must you impugn?
must he impugn?
must we impugn?
must you impugn?
must they impugn? 	must I be impugning?
must you be impugning?
must he be impugning?
must we be impugning?
must you be impugning?
must they be impugning? 	must I have impugned?
must you have impugned?
must he have impugned?
must we have impugned?
must you have impugned?
must they have impugned? 	must I have been impugning?
must you have been impugning?
must he have been impugning?
must we have been impugning?
must you have been impugning?
must they have been impugning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I impugn?
mustn't you impugn?
mustn't he impugn?
mustn't we impugn?
mustn't you impugn?
mustn't they impugn? 	mustn't I be impugning?
mustn't you be impugning?
mustn't he be impugning?
mustn't we be impugning?
mustn't you be impugning?
mustn't they be impugning? 	mustn't I have impugned?
mustn't you have impugned?
mustn't he have impugned?
mustn't we have impugned?
mustn't you have impugned?
mustn't they have impugned? 	mustn't I have been impugning?
mustn't you have been impugning?
mustn't he have been impugning?
mustn't we have been impugning?
mustn't you have been impugning?
mustn't they have been impugning?