I may lighten you may lighten he may lighten we may lighten you may lighten they may lighten
V-ing form
I may be lightening you may be lightening he may be lightening we may be lightening you may be lightening they may be lightening
Perfect
I may have lightened you may have lightened he may have lightened we may have lightened you may have lightened they may have lightened
V-ing perfect
I may have been lightening you may have been lightening he may have been lightening we may have been lightening you may have been lightening they may have been lightening
Negation
Simple form
I mayn't lighten you mayn't lighten he mayn't lighten we mayn't lighten you mayn't lighten they mayn't lighten
V-ing form
I mayn't be lightening you mayn't be lightening he mayn't be lightening we mayn't be lightening you mayn't be lightening they mayn't be lightening
Perfect
I mayn't have lightened you mayn't have lightened he mayn't have lightened we mayn't have lightened you mayn't have lightened they mayn't have lightened
V-ing perfect
I mayn't have been lightening you mayn't have been lightening he mayn't have been lightening we mayn't have been lightening you mayn't have been lightening they mayn't have been lightening
Interrogative form
Simple form
may I lighten? may you lighten? may he lighten? may we lighten? may you lighten? may they lighten?
V-ing form
may I be lightening? may you be lightening? may he be lightening? may we be lightening? may you be lightening? may they be lightening?
Perfect
may I have lightened? may you have lightened? may he have lightened? may we have lightened? may you have lightened? may they have lightened?
V-ing perfect
may I have been lightening? may you have been lightening? may he have been lightening? may we have been lightening? may you have been lightening? may they have been lightening?
Interro-negative form
Simple form
mayn't I lighten? mayn't you lighten? mayn't he lighten? mayn't we lighten? mayn't you lighten? mayn't they lighten?
V-ing form
mayn't I be lightening? mayn't you be lightening? mayn't he be lightening? mayn't we be lightening? mayn't you be lightening? mayn't they be lightening?
Perfect
mayn't I have lightened? mayn't you have lightened? mayn't he have lightened? mayn't we have lightened? mayn't you have lightened? mayn't they have lightened?
V-ing perfect
mayn't I have been lightening? mayn't you have been lightening? mayn't he have been lightening? mayn't we have been lightening? mayn't you have been lightening? mayn't they have been lightening?