English verb conjugation
MAY MARK

Regular verb: mark - marked - marked

Affirmation

Simple form	V-ing form
I may mark you may mark he may mark we may mark you may mark they may mark	I may be marking you may be marking he may be marking we may be marking you may be marking they may be marking
Perfect	V-ing perfect
I may have marked you may have marked he may have marked we may have marked you may have marked they may have marked	I may have been marking you may have been marking he may have been marking we may have been marking you may have been marking they may have been marking

Negation

Simple form	V-ing form
I may not mark you may not mark he may not mark we may not mark you may not mark they may not mark	I may not be marking you may not be marking he may not be marking we may not be marking you may not be marking they may not be marking
Perfect	V-ing perfect
I may not have marked you may not have marked he may not have marked we may not have marked you may not have marked they may not have marked	I may not have been marking you may not have been marking he may not have been marking we may not have been marking you may not have been marking they may not have been marking

Interrogative form

Simple form	V-ing form
may I mark? may you mark? may he mark? may we mark? may you mark? may they mark?	may I be marking? may you be marking? may he be marking? may we be marking? may you be marking? may they be marking?
Perfect	V-ing perfect
may I have marked? may you have marked? may he have marked? may we have marked? may you have marked? may they have marked?	may I have been marking? may you have been marking? may he have been marking? may we have been marking? may you have been marking? may they have been marking?

Interro-negative form

Simple form	V-ing form
may I not mark? may you not mark? may he not mark? may we not mark? may you not mark? may they not mark?	may I not be marking? may you not be marking? may he not be marking? may we not be marking? may you not be marking? may they not be marking?
Perfect	V-ing perfect
may I not have marked? may you not have marked? may he not have marked? may we not have marked? may you not have marked? may they not have marked?	may I not have been marking? may you not have been marking? may he not have been marking? may we not have been marking? may you not have been marking? may they not have been marking?