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 may not countermand you may not countermand she may not countermand we may not countermand you may not countermand they may not countermand
V-ing form
I may not be countermanding you may not be countermanding she may not be countermanding we may not be countermanding you may not be countermanding they may not be countermanding
Perfect
I may not have countermanded you may not have countermanded she may not have countermanded we may not have countermanded you may not have countermanded they may not have countermanded
V-ing perfect
I may not have been countermanding you may not have been countermanding she may not have been countermanding we may not have been countermanding you may not have been countermanding they may not 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
may I not countermand? may you not countermand? may she not countermand? may we not countermand? may you not countermand? may they not countermand?
V-ing form
may I not be countermanding? may you not be countermanding? may she not be countermanding? may we not be countermanding? may you not be countermanding? may they not be countermanding?
Perfect
may I not have countermanded? may you not have countermanded? may she not have countermanded? may we not have countermanded? may you not have countermanded? may they not have countermanded?
V-ing perfect
may I not have been countermanding? may you not have been countermanding? may she not have been countermanding? may we not have been countermanding? may you not have been countermanding? may they not have been countermanding?