I may underline you may underline she may underline we may underline you may underline they may underline
V-ing form
I may be underlining you may be underlining she may be underlining we may be underlining you may be underlining they may be underlining
Perfect
I may have underlined you may have underlined she may have underlined we may have underlined you may have underlined they may have underlined
V-ing perfect
I may have been underlining you may have been underlining she may have been underlining we may have been underlining you may have been underlining they may have been underlining
Negation
Simple form
I mayn't underline you mayn't underline she mayn't underline we mayn't underline you mayn't underline they mayn't underline
V-ing form
I mayn't be underlining you mayn't be underlining she mayn't be underlining we mayn't be underlining you mayn't be underlining they mayn't be underlining
Perfect
I mayn't have underlined you mayn't have underlined she mayn't have underlined we mayn't have underlined you mayn't have underlined they mayn't have underlined
V-ing perfect
I mayn't have been underlining you mayn't have been underlining she mayn't have been underlining we mayn't have been underlining you mayn't have been underlining they mayn't have been underlining
Interrogative form
Simple form
may I underline? may you underline? may she underline? may we underline? may you underline? may they underline?
V-ing form
may I be underlining? may you be underlining? may she be underlining? may we be underlining? may you be underlining? may they be underlining?
Perfect
may I have underlined? may you have underlined? may she have underlined? may we have underlined? may you have underlined? may they have underlined?
V-ing perfect
may I have been underlining? may you have been underlining? may she have been underlining? may we have been underlining? may you have been underlining? may they have been underlining?
Interro-negative form
Simple form
mayn't I underline? mayn't you underline? mayn't she underline? mayn't we underline? mayn't you underline? mayn't they underline?
V-ing form
mayn't I be underlining? mayn't you be underlining? mayn't she be underlining? mayn't we be underlining? mayn't you be underlining? mayn't they be underlining?
Perfect
mayn't I have underlined? mayn't you have underlined? mayn't she have underlined? mayn't we have underlined? mayn't you have underlined? mayn't they have underlined?
V-ing perfect
mayn't I have been underlining? mayn't you have been underlining? mayn't she have been underlining? mayn't we have been underlining? mayn't you have been underlining? mayn't they have been underlining?