English verb conjugation
MAY FORESTALL

Regular verb: forestall - forestalled - forestalled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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