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

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

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

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

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