could fester
Regelmä&szlig;iges Verb: fester - festered- festered

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could fester
you could fester
he could fester
we could fester
you could fester
they could fester 	I could be festering
you could be festering
he could be festering
we could be festering
you could be festering
they could be festering	I could have festered
you could have festered
he could have festered
we could have festered
you could have festered
they could have festered	I could have been festering
you could have been festering
he could have been festering
we could have been festering
you could have been festering
they could have been festering	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't fester
you couldn't fester
he couldn't fester
we couldn't fester
you couldn't fester
they couldn't fester 	I couldn't be festering
you couldn't be festering
he couldn't be festering
we couldn't be festering
you couldn't be festering
they couldn't be festering	I couldn't have festered
you couldn't have festered
he couldn't have festered
we couldn't have festered
you couldn't have festered
they couldn't have festered	I couldn't have been festering
you couldn't have been festering
he couldn't have been festering
we couldn't have been festering
you couldn't have been festering
they couldn't have been festering	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I fester?
could you fester?
could he fester?
could we fester?
could you fester?
could they fester? 	could I be festering?
could you be festering?
could he be festering?
could we be festering?
could you be festering?
could they be festering? 	could I have festered?
could you have festered?
could he have festered?
could we have festered?
could you have festered?
could they have festered? 	could I have been festering?
could you have been festering?
could he have been festering?
could we have been festering?
could you have been festering?
could they have been festering? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I fester?
couldn't you fester?
couldn't he fester?
couldn't we fester?
couldn't you fester?
couldn't they fester? 	couldn't I be festering?
couldn't you be festering?
couldn't he be festering?
couldn't we be festering?
couldn't you be festering?
couldn't they be festering? 	couldn't I have festered?
couldn't you have festered?
couldn't he have festered?
couldn't we have festered?
couldn't you have festered?
couldn't they have festered? 	couldn't I have been festering?
couldn't you have been festering?
couldn't he have been festering?
couldn't we have been festering?
couldn't you have been festering?
couldn't they have been festering?