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