English verb conjugation
MAY BRIGHTEN

Regular verb: brighten - brightened - brightened

Affirmation

Simple form	V-ing form
I may brighten you may brighten he may brighten we may brighten you may brighten they may brighten	I may be brightening you may be brightening he may be brightening we may be brightening you may be brightening they may be brightening
Perfect	V-ing perfect
I may have brightened you may have brightened he may have brightened we may have brightened you may have brightened they may have brightened	I may have been brightening you may have been brightening he may have been brightening we may have been brightening you may have been brightening they may have been brightening

Negation

Simple form	V-ing form
I may not brighten you may not brighten he may not brighten we may not brighten you may not brighten they may not brighten	I may not be brightening you may not be brightening he may not be brightening we may not be brightening you may not be brightening they may not be brightening
Perfect	V-ing perfect
I may not have brightened you may not have brightened he may not have brightened we may not have brightened you may not have brightened they may not have brightened	I may not have been brightening you may not have been brightening he may not have been brightening we may not have been brightening you may not have been brightening they may not have been brightening

Interrogative form

Simple form	V-ing form
may I brighten? may you brighten? may he brighten? may we brighten? may you brighten? may they brighten?	may I be brightening? may you be brightening? may he be brightening? may we be brightening? may you be brightening? may they be brightening?
Perfect	V-ing perfect
may I have brightened? may you have brightened? may he have brightened? may we have brightened? may you have brightened? may they have brightened?	may I have been brightening? may you have been brightening? may he have been brightening? may we have been brightening? may you have been brightening? may they have been brightening?

Interro-negative form

Simple form	V-ing form
may I not brighten? may you not brighten? may he not brighten? may we not brighten? may you not brighten? may they not brighten?	may I not be brightening? may you not be brightening? may he not be brightening? may we not be brightening? may you not be brightening? may they not be brightening?
Perfect	V-ing perfect
may I not have brightened? may you not have brightened? may he not have brightened? may we not have brightened? may you not have brightened? may they not have brightened?	may I not have been brightening? may you not have been brightening? may he not have been brightening? may we not have been brightening? may you not have been brightening? may they not have been brightening?