could brighten
Regelmä&szlig;iges Verb: brighten - brightened- brightened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could brighten
you could brighten
he could brighten
we could brighten
you could brighten
they could brighten 	I could be brightening
you could be brightening
he could be brightening
we could be brightening
you could be brightening
they could be brightening	I could have brightened
you could have brightened
he could have brightened
we could have brightened
you could have brightened
they could have brightened	I could have been brightening
you could have been brightening
he could have been brightening
we could have been brightening
you could have been brightening
they could have been brightening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't brighten
you couldn't brighten
he couldn't brighten
we couldn't brighten
you couldn't brighten
they couldn't brighten 	I couldn't be brightening
you couldn't be brightening
he couldn't be brightening
we couldn't be brightening
you couldn't be brightening
they couldn't be brightening	I couldn't have brightened
you couldn't have brightened
he couldn't have brightened
we couldn't have brightened
you couldn't have brightened
they couldn't have brightened	I couldn't have been brightening
you couldn't have been brightening
he couldn't have been brightening
we couldn't have been brightening
you couldn't have been brightening
they couldn't have been brightening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I brighten?
could you brighten?
could he brighten?
could we brighten?
could you brighten?
could they brighten? 	could I be brightening?
could you be brightening?
could he be brightening?
could we be brightening?
could you be brightening?
could they be brightening? 	could I have brightened?
could you have brightened?
could he have brightened?
could we have brightened?
could you have brightened?
could they have brightened? 	could I have been brightening?
could you have been brightening?
could he have been brightening?
could we have been brightening?
could you have been brightening?
could they have been brightening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I brighten?
couldn't you brighten?
couldn't he brighten?
couldn't we brighten?
couldn't you brighten?
couldn't they brighten? 	couldn't I be brightening?
couldn't you be brightening?
couldn't he be brightening?
couldn't we be brightening?
couldn't you be brightening?
couldn't they be brightening? 	couldn't I have brightened?
couldn't you have brightened?
couldn't he have brightened?
couldn't we have brightened?
couldn't you have brightened?
couldn't they have brightened? 	couldn't I have been brightening?
couldn't you have been brightening?
couldn't he have been brightening?
couldn't we have been brightening?
couldn't you have been brightening?
couldn't they have been brightening?