English verb conjugation
CAN FORESTALL

Regular verb: forestall - forestalled - forestalled

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I cannot forestall you cannot forestall he cannot forestall we cannot forestall you cannot forestall they cannot forestall	I cannot be forestalling you cannot be forestalling he cannot be forestalling we cannot be forestalling you cannot be forestalling they cannot be forestalling
Perfect	V-ing perfect
I cannot have forestalled you cannot have forestalled he cannot have forestalled we cannot have forestalled you cannot have forestalled they cannot have forestalled	I cannot have been forestalling you cannot have been forestalling he cannot have been forestalling we cannot have been forestalling you cannot have been forestalling they cannot have been forestalling

Interrogative form

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