could unvoice
Verbo regular: unvoice - unvoiced- unvoiced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could unvoice
you could unvoice
he could unvoice
we could unvoice
you could unvoice
they could unvoice 	I could be unvoicing
you could be unvoicing
he could be unvoicing
we could be unvoicing
you could be unvoicing
they could be unvoicing	I could have unvoiced
you could have unvoiced
he 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
he could have been unvoicing
we could have been unvoicing
you could have been unvoicing
they could have been unvoicing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't unvoice
you couldn't unvoice
he 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
he 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
he 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
he couldn't have been unvoicing
we couldn't have been unvoicing
you couldn't have been unvoicing
they couldn't have been unvoicing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I unvoice?
could you unvoice?
could he unvoice?
could we unvoice?
could you unvoice?
could they unvoice? 	could I be unvoicing?
could you be unvoicing?
could he be unvoicing?
could we be unvoicing?
could you be unvoicing?
could they be unvoicing? 	could I have unvoiced?
could you have unvoiced?
could he 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 he have been unvoicing?
could we have been unvoicing?
could you have been unvoicing?
could they have been unvoicing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I unvoice?
couldn't you unvoice?
couldn't he 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 he 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 he 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 he have been unvoicing?
couldn't we have been unvoicing?
couldn't you have been unvoicing?
couldn't they have been unvoicing?