could blacken
Regelmä&szlig;iges Verb: blacken - blackened- blackened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could blacken
you could blacken
he could blacken
we could blacken
you could blacken
they could blacken 	I could be blackening
you could be blackening
he could be blackening
we could be blackening
you could be blackening
they could be blackening	I could have blackened
you could have blackened
he could have blackened
we could have blackened
you could have blackened
they could have blackened	I could have been blackening
you could have been blackening
he could have been blackening
we could have been blackening
you could have been blackening
they could have been blackening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't blacken
you couldn't blacken
he couldn't blacken
we couldn't blacken
you couldn't blacken
they couldn't blacken 	I couldn't be blackening
you couldn't be blackening
he couldn't be blackening
we couldn't be blackening
you couldn't be blackening
they couldn't be blackening	I couldn't have blackened
you couldn't have blackened
he couldn't have blackened
we couldn't have blackened
you couldn't have blackened
they couldn't have blackened	I couldn't have been blackening
you couldn't have been blackening
he couldn't have been blackening
we couldn't have been blackening
you couldn't have been blackening
they couldn't have been blackening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I blacken?
could you blacken?
could he blacken?
could we blacken?
could you blacken?
could they blacken? 	could I be blackening?
could you be blackening?
could he be blackening?
could we be blackening?
could you be blackening?
could they be blackening? 	could I have blackened?
could you have blackened?
could he have blackened?
could we have blackened?
could you have blackened?
could they have blackened? 	could I have been blackening?
could you have been blackening?
could he have been blackening?
could we have been blackening?
could you have been blackening?
could they have been blackening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I blacken?
couldn't you blacken?
couldn't he blacken?
couldn't we blacken?
couldn't you blacken?
couldn't they blacken? 	couldn't I be blackening?
couldn't you be blackening?
couldn't he be blackening?
couldn't we be blackening?
couldn't you be blackening?
couldn't they be blackening? 	couldn't I have blackened?
couldn't you have blackened?
couldn't he have blackened?
couldn't we have blackened?
couldn't you have blackened?
couldn't they have blackened? 	couldn't I have been blackening?
couldn't you have been blackening?
couldn't he have been blackening?
couldn't we have been blackening?
couldn't you have been blackening?
couldn't they have been blackening?