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