English verb conjugation
MAY GRIN

Regular verb: grin - grinned - grinned

Affirmation

Simple form	V-ing form
I may grin you may grin he may grin we may grin you may grin they may grin	I may be grinning you may be grinning he may be grinning we may be grinning you may be grinning they may be grinning
Perfect	V-ing perfect
I may have grinned you may have grinned he may have grinned we may have grinned you may have grinned they may have grinned	I may have been grinning you may have been grinning he may have been grinning we may have been grinning you may have been grinning they may have been grinning

Negation

Simple form	V-ing form
I may not grin you may not grin he may not grin we may not grin you may not grin they may not grin	I may not be grinning you may not be grinning he may not be grinning we may not be grinning you may not be grinning they may not be grinning
Perfect	V-ing perfect
I may not have grinned you may not have grinned he may not have grinned we may not have grinned you may not have grinned they may not have grinned	I may not have been grinning you may not have been grinning he may not have been grinning we may not have been grinning you may not have been grinning they may not have been grinning

Interrogative form

Simple form	V-ing form
may I grin? may you grin? may he grin? may we grin? may you grin? may they grin?	may I be grinning? may you be grinning? may he be grinning? may we be grinning? may you be grinning? may they be grinning?
Perfect	V-ing perfect
may I have grinned? may you have grinned? may he have grinned? may we have grinned? may you have grinned? may they have grinned?	may I have been grinning? may you have been grinning? may he have been grinning? may we have been grinning? may you have been grinning? may they have been grinning?

Interro-negative form

Simple form	V-ing form
may I not grin? may you not grin? may he not grin? may we not grin? may you not grin? may they not grin?	may I not be grinning? may you not be grinning? may he not be grinning? may we not be grinning? may you not be grinning? may they not be grinning?
Perfect	V-ing perfect
may I not have grinned? may you not have grinned? may he not have grinned? may we not have grinned? may you not have grinned? may they not have grinned?	may I not have been grinning? may you not have been grinning? may he not have been grinning? may we not have been grinning? may you not have been grinning? may they not have been grinning?