could unvoice
Verbe régulier : unvoice - unvoiced- unvoiced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could unvoice
you could unvoice
she could unvoice
we could unvoice
you could unvoice
they could unvoice 	I could be unvoicing
you could be unvoicing
she could be unvoicing
we could be unvoicing
you could be unvoicing
they could be unvoicing	I could have unvoiced
you could have unvoiced
she could have unvoiced
we could have unvoiced
you could have unvoiced
they could have unvoiced	I could have been unvoicing
you could have been unvoicing
she could have been unvoicing
we could have been unvoicing
you could have been unvoicing
they could have been unvoicing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't unvoice
you couldn't unvoice
she couldn't unvoice
we couldn't unvoice
you couldn't unvoice
they couldn't unvoice 	I couldn't be unvoicing
you couldn't be unvoicing
she couldn't be unvoicing
we couldn't be unvoicing
you couldn't be unvoicing
they couldn't be unvoicing	I couldn't have unvoiced
you couldn't have unvoiced
she couldn't have unvoiced
we couldn't have unvoiced
you couldn't have unvoiced
they couldn't have unvoiced	I couldn't have been unvoicing
you couldn't have been unvoicing
she couldn't have been unvoicing
we couldn't have been unvoicing
you couldn't have been unvoicing
they couldn't have been unvoicing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I unvoice?
could you unvoice?
could she unvoice?
could we unvoice?
could you unvoice?
could they unvoice? 	could I be unvoicing?
could you be unvoicing?
could she be unvoicing?
could we be unvoicing?
could you be unvoicing?
could they be unvoicing? 	could I have unvoiced?
could you have unvoiced?
could she have unvoiced?
could we have unvoiced?
could you have unvoiced?
could they have unvoiced? 	could I have been unvoicing?
could you have been unvoicing?
could she have been unvoicing?
could we have been unvoicing?
could you have been unvoicing?
could they have been unvoicing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I unvoice?
couldn't you unvoice?
couldn't she unvoice?
couldn't we unvoice?
couldn't you unvoice?
couldn't they unvoice? 	couldn't I be unvoicing?
couldn't you be unvoicing?
couldn't she be unvoicing?
couldn't we be unvoicing?
couldn't you be unvoicing?
couldn't they be unvoicing? 	couldn't I have unvoiced?
couldn't you have unvoiced?
couldn't she have unvoiced?
couldn't we have unvoiced?
couldn't you have unvoiced?
couldn't they have unvoiced? 	couldn't I have been unvoicing?
couldn't you have been unvoicing?
couldn't she have been unvoicing?
couldn't we have been unvoicing?
couldn't you have been unvoicing?
couldn't they have been unvoicing?