could prefer
Verbo regular: prefer - preferred- preferred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could prefer
you could prefer
he could prefer
we could prefer
you could prefer
they could prefer 	I could be preferring
you could be preferring
he could be preferring
we could be preferring
you could be preferring
they could be preferring	I could have preferred
you could have preferred
he could have preferred
we could have preferred
you could have preferred
they could have preferred	I could have been preferring
you could have been preferring
he could have been preferring
we could have been preferring
you could have been preferring
they could have been preferring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't prefer
you couldn't prefer
he couldn't prefer
we couldn't prefer
you couldn't prefer
they couldn't prefer 	I couldn't be preferring
you couldn't be preferring
he couldn't be preferring
we couldn't be preferring
you couldn't be preferring
they couldn't be preferring	I couldn't have preferred
you couldn't have preferred
he couldn't have preferred
we couldn't have preferred
you couldn't have preferred
they couldn't have preferred	I couldn't have been preferring
you couldn't have been preferring
he couldn't have been preferring
we couldn't have been preferring
you couldn't have been preferring
they couldn't have been preferring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I prefer?
could you prefer?
could he prefer?
could we prefer?
could you prefer?
could they prefer? 	could I be preferring?
could you be preferring?
could he be preferring?
could we be preferring?
could you be preferring?
could they be preferring? 	could I have preferred?
could you have preferred?
could he have preferred?
could we have preferred?
could you have preferred?
could they have preferred? 	could I have been preferring?
could you have been preferring?
could he have been preferring?
could we have been preferring?
could you have been preferring?
could they have been preferring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I prefer?
couldn't you prefer?
couldn't he prefer?
couldn't we prefer?
couldn't you prefer?
couldn't they prefer? 	couldn't I be preferring?
couldn't you be preferring?
couldn't he be preferring?
couldn't we be preferring?
couldn't you be preferring?
couldn't they be preferring? 	couldn't I have preferred?
couldn't you have preferred?
couldn't he have preferred?
couldn't we have preferred?
couldn't you have preferred?
couldn't they have preferred? 	couldn't I have been preferring?
couldn't you have been preferring?
couldn't he have been preferring?
couldn't we have been preferring?
couldn't you have been preferring?
couldn't they have been preferring?