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