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