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