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 mayn't brighten you mayn't brighten he mayn't brighten we mayn't brighten you mayn't brighten they mayn't brighten	I mayn't be brightening you mayn't be brightening he mayn't be brightening we mayn't be brightening you mayn't be brightening they mayn't be brightening
Perfect	V-ing perfect
I mayn't have brightened you mayn't have brightened he mayn't have brightened we mayn't have brightened you mayn't have brightened they mayn't have brightened	I mayn't have been brightening you mayn't have been brightening he mayn't have been brightening we mayn't have been brightening you mayn't have been brightening they mayn't 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
mayn't I brighten? mayn't you brighten? mayn't he brighten? mayn't we brighten? mayn't you brighten? mayn't they brighten?	mayn't I be brightening? mayn't you be brightening? mayn't he be brightening? mayn't we be brightening? mayn't you be brightening? mayn't they be brightening?
Perfect	V-ing perfect
mayn't I have brightened? mayn't you have brightened? mayn't he have brightened? mayn't we have brightened? mayn't you have brightened? mayn't they have brightened?	mayn't I have been brightening? mayn't you have been brightening? mayn't he have been brightening? mayn't we have been brightening? mayn't you have been brightening? mayn't they have been brightening?