could widen
Verbo regular: widen - widened- widened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could widen
you could widen
he could widen
we could widen
you could widen
they could widen 	I could be widening
you could be widening
he could be widening
we could be widening
you could be widening
they could be widening	I could have widened
you could have widened
he could have widened
we could have widened
you could have widened
they could have widened	I could have been widening
you could have been widening
he could have been widening
we could have been widening
you could have been widening
they could have been widening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't widen
you couldn't widen
he couldn't widen
we couldn't widen
you couldn't widen
they couldn't widen 	I couldn't be widening
you couldn't be widening
he couldn't be widening
we couldn't be widening
you couldn't be widening
they couldn't be widening	I couldn't have widened
you couldn't have widened
he couldn't have widened
we couldn't have widened
you couldn't have widened
they couldn't have widened	I couldn't have been widening
you couldn't have been widening
he couldn't have been widening
we couldn't have been widening
you couldn't have been widening
they couldn't have been widening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I widen?
could you widen?
could he widen?
could we widen?
could you widen?
could they widen? 	could I be widening?
could you be widening?
could he be widening?
could we be widening?
could you be widening?
could they be widening? 	could I have widened?
could you have widened?
could he have widened?
could we have widened?
could you have widened?
could they have widened? 	could I have been widening?
could you have been widening?
could he have been widening?
could we have been widening?
could you have been widening?
could they have been widening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I widen?
couldn't you widen?
couldn't he widen?
couldn't we widen?
couldn't you widen?
couldn't they widen? 	couldn't I be widening?
couldn't you be widening?
couldn't he be widening?
couldn't we be widening?
couldn't you be widening?
couldn't they be widening? 	couldn't I have widened?
couldn't you have widened?
couldn't he have widened?
couldn't we have widened?
couldn't you have widened?
couldn't they have widened? 	couldn't I have been widening?
couldn't you have been widening?
couldn't he have been widening?
couldn't we have been widening?
couldn't you have been widening?
couldn't they have been widening?