could devoice
Verbe régulier : devoice - devoiced- devoiced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could devoice
you could devoice
he could devoice
we could devoice
you could devoice
they could devoice 	I could be devoicing
you could be devoicing
he could be devoicing
we could be devoicing
you could be devoicing
they could be devoicing	I could have devoiced
you could have devoiced
he could have devoiced
we could have devoiced
you could have devoiced
they could have devoiced	I could have been devoicing
you could have been devoicing
he could have been devoicing
we could have been devoicing
you could have been devoicing
they could have been devoicing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't devoice
you couldn't devoice
he couldn't devoice
we couldn't devoice
you couldn't devoice
they couldn't devoice 	I couldn't be devoicing
you couldn't be devoicing
he couldn't be devoicing
we couldn't be devoicing
you couldn't be devoicing
they couldn't be devoicing	I couldn't have devoiced
you couldn't have devoiced
he couldn't have devoiced
we couldn't have devoiced
you couldn't have devoiced
they couldn't have devoiced	I couldn't have been devoicing
you couldn't have been devoicing
he couldn't have been devoicing
we couldn't have been devoicing
you couldn't have been devoicing
they couldn't have been devoicing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I devoice?
could you devoice?
could he devoice?
could we devoice?
could you devoice?
could they devoice? 	could I be devoicing?
could you be devoicing?
could he be devoicing?
could we be devoicing?
could you be devoicing?
could they be devoicing? 	could I have devoiced?
could you have devoiced?
could he have devoiced?
could we have devoiced?
could you have devoiced?
could they have devoiced? 	could I have been devoicing?
could you have been devoicing?
could he have been devoicing?
could we have been devoicing?
could you have been devoicing?
could they have been devoicing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I devoice?
couldn't you devoice?
couldn't he devoice?
couldn't we devoice?
couldn't you devoice?
couldn't they devoice? 	couldn't I be devoicing?
couldn't you be devoicing?
couldn't he be devoicing?
couldn't we be devoicing?
couldn't you be devoicing?
couldn't they be devoicing? 	couldn't I have devoiced?
couldn't you have devoiced?
couldn't he have devoiced?
couldn't we have devoiced?
couldn't you have devoiced?
couldn't they have devoiced? 	couldn't I have been devoicing?
couldn't you have been devoicing?
couldn't he have been devoicing?
couldn't we have been devoicing?
couldn't you have been devoicing?
couldn't they have been devoicing?