English verb conjugation
MUST FORESTALL

Regular verb: forestall - forestalled - forestalled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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