can forestall
Regular verb: forestall - forestalled- forestalled

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

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

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

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