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