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