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