English verb conjugation
MAY EXIST

Regular verb: exist - existed - existed

Affirmation

Simple form	V-ing form
I may exist you may exist he may exist we may exist you may exist they may exist	I may be existing you may be existing he may be existing we may be existing you may be existing they may be existing
Perfect	V-ing perfect
I may have existed you may have existed he may have existed we may have existed you may have existed they may have existed	I may have been existing you may have been existing he may have been existing we may have been existing you may have been existing they may have been existing

Negation

Simple form	V-ing form
I may not exist you may not exist he may not exist we may not exist you may not exist they may not exist	I may not be existing you may not be existing he may not be existing we may not be existing you may not be existing they may not be existing
Perfect	V-ing perfect
I may not have existed you may not have existed he may not have existed we may not have existed you may not have existed they may not have existed	I may not have been existing you may not have been existing he may not have been existing we may not have been existing you may not have been existing they may not have been existing

Interrogative form

Simple form	V-ing form
may I exist? may you exist? may he exist? may we exist? may you exist? may they exist?	may I be existing? may you be existing? may he be existing? may we be existing? may you be existing? may they be existing?
Perfect	V-ing perfect
may I have existed? may you have existed? may he have existed? may we have existed? may you have existed? may they have existed?	may I have been existing? may you have been existing? may he have been existing? may we have been existing? may you have been existing? may they have been existing?

Interro-negative form

Simple form	V-ing form
may I not exist? may you not exist? may he not exist? may we not exist? may you not exist? may they not exist?	may I not be existing? may you not be existing? may he not be existing? may we not be existing? may you not be existing? may they not be existing?
Perfect	V-ing perfect
may I not have existed? may you not have existed? may he not have existed? may we not have existed? may you not have existed? may they not have existed?	may I not have been existing? may you not have been existing? may he not have been existing? may we not have been existing? may you not have been existing? may they not have been existing?