shall forestall
Regular verb: forestall - forestalled- forestalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll forestall
you'll forestall
he'll forestall
we'll forestall
you'll forestall
they'll forestall 	I'll be forestalling
you'll be forestalling
he'll be forestalling
we'll be forestalling
you'll be forestalling
they'll be forestalling	I'll have forestalled
you'll have forestalled
he'll have forestalled
we'll have forestalled
you'll have forestalled
they'll have forestalled	I'll have been forestalling
you'll have been forestalling
he'll have been forestalling
we'll have been forestalling
you'll have been forestalling
they'll have been forestalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't forestall
you shan't forestall
he shan't forestall
we shan't forestall
you shan't forestall
they shan't forestall 	I shan't be forestalling
you shan't be forestalling
he shan't be forestalling
we shan't be forestalling
you shan't be forestalling
they shan't be forestalling	I shan't have forestalled
you shan't have forestalled
he shan't have forestalled
we shan't have forestalled
you shan't have forestalled
they shan't have forestalled	I shan't have been forestalling
you shan't have been forestalling
he shan't have been forestalling
we shan't have been forestalling
you shan't have been forestalling
they shan't have been forestalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I forestall?
shall you forestall?
shall he forestall?
shall we forestall?
shall you forestall?
shall they forestall? 	shall I be forestalling?
shall you be forestalling?
shall he be forestalling?
shall we be forestalling?
shall you be forestalling?
shall they be forestalling? 	shall I have forestalled?
shall you have forestalled?
shall he have forestalled?
shall we have forestalled?
shall you have forestalled?
shall they have forestalled? 	shall I have been forestalling?
shall you have been forestalling?
shall he have been forestalling?
shall we have been forestalling?
shall you have been forestalling?
shall they have been forestalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I forestall?
shan't you forestall?
shan't he forestall?
shan't we forestall?
shan't you forestall?
shan't they forestall? 	shan't I be forestalling?
shan't you be forestalling?
shan't he be forestalling?
shan't we be forestalling?
shan't you be forestalling?
shan't they be forestalling? 	shan't I have forestalled?
shan't you have forestalled?
shan't he have forestalled?
shan't we have forestalled?
shan't you have forestalled?
shan't they have forestalled? 	shan't I have been forestalling?
shan't you have been forestalling?
shan't he have been forestalling?
shan't we have been forestalling?
shan't you have been forestalling?
shan't they have been forestalling?