can fester
Verbo regolare: fester - festered- festered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can fester
you can fester
he can fester
we can fester
you can fester
they can fester 	I can be festering
you can be festering
he can be festering
we can be festering
you can be festering
they can be festering	I can have festered
you can have festered
he can have festered
we can have festered
you can have festered
they can have festered	I can have been festering
you can have been festering
he can have been festering
we can have been festering
you can have been festering
they can have been festering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I cannot fester
you cannot fester
he cannot fester
we cannot fester
you cannot fester
they cannot fester 	I cannot be festering
you cannot be festering
he cannot be festering
we cannot be festering
you cannot be festering
they cannot be festering	I cannot have festered
you cannot have festered
he cannot have festered
we cannot have festered
you cannot have festered
they cannot have festered	I cannot have been festering
you cannot have been festering
he cannot have been festering
we cannot have been festering
you cannot have been festering
they cannot have been festering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I fester?
can you fester?
can he fester?
can we fester?
can you fester?
can they fester? 	can I be festering?
can you be festering?
can he be festering?
can we be festering?
can you be festering?
can they be festering? 	can I have festered?
can you have festered?
can he have festered?
can we have festered?
can you have festered?
can they have festered? 	can I have been festering?
can you have been festering?
can he have been festering?
can we have been festering?
can you have been festering?
can they have been festering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I not fester?
can you not fester?
can he not fester?
can we not fester?
can you not fester?
can they not fester? 	can I not be festering?
can you not be festering?
can he not be festering?
can we not be festering?
can you not be festering?
can they not be festering? 	can I not have festered?
can you not have festered?
can he not have festered?
can we not have festered?
can you not have festered?
can they not have festered? 	can I not have been festering?
can you not have been festering?
can he not have been festering?
can we not have been festering?
can you not have been festering?
can they not have been festering?