shall fester
Regular verb: fester - festered- festered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll fester
you'll fester
he'll fester
we'll fester
you'll fester
they'll fester 	I'll be festering
you'll be festering
he'll be festering
we'll be festering
you'll be festering
they'll be festering	I'll have festered
you'll have festered
he'll have festered
we'll have festered
you'll have festered
they'll have festered	I'll have been festering
you'll have been festering
he'll have been festering
we'll have been festering
you'll have been festering
they'll have been festering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't fester
you shan't fester
he shan't fester
we shan't fester
you shan't fester
they shan't fester 	I shan't be festering
you shan't be festering
he shan't be festering
we shan't be festering
you shan't be festering
they shan't be festering	I shan't have festered
you shan't have festered
he shan't have festered
we shan't have festered
you shan't have festered
they shan't have festered	I shan't have been festering
you shan't have been festering
he shan't have been festering
we shan't have been festering
you shan't have been festering
they shan't have been festering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I fester?
shall you fester?
shall he fester?
shall we fester?
shall you fester?
shall they fester? 	shall I be festering?
shall you be festering?
shall he be festering?
shall we be festering?
shall you be festering?
shall they be festering? 	shall I have festered?
shall you have festered?
shall he have festered?
shall we have festered?
shall you have festered?
shall they have festered? 	shall I have been festering?
shall you have been festering?
shall he have been festering?
shall we have been festering?
shall you have been festering?
shall they have been festering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I fester?
shan't you fester?
shan't he fester?
shan't we fester?
shan't you fester?
shan't they fester? 	shan't I be festering?
shan't you be festering?
shan't he be festering?
shan't we be festering?
shan't you be festering?
shan't they be festering? 	shan't I have festered?
shan't you have festered?
shan't he have festered?
shan't we have festered?
shan't you have festered?
shan't they have festered? 	shan't I have been festering?
shan't you have been festering?
shan't he have been festering?
shan't we have been festering?
shan't you have been festering?
shan't they have been festering?