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