English verb conjugation
MAY COUNTERMAND

Regular verb: countermand - countermanded - countermanded

Affirmation

Simple form	V-ing form
I may countermand you may countermand he may countermand we may countermand you may countermand they may countermand	I may be countermanding you may be countermanding he may be countermanding we may be countermanding you may be countermanding they may be countermanding
Perfect	V-ing perfect
I may have countermanded you may have countermanded he may have countermanded we may have countermanded you may have countermanded they may have countermanded	I may have been countermanding you may have been countermanding he may have been countermanding we may have been countermanding you may have been countermanding they may have been countermanding

Negation

Simple form	V-ing form
I mayn't countermand you mayn't countermand he mayn't countermand we mayn't countermand you mayn't countermand they mayn't countermand	I mayn't be countermanding you mayn't be countermanding he mayn't be countermanding we mayn't be countermanding you mayn't be countermanding they mayn't be countermanding
Perfect	V-ing perfect
I mayn't have countermanded you mayn't have countermanded he mayn't have countermanded we mayn't have countermanded you mayn't have countermanded they mayn't have countermanded	I mayn't have been countermanding you mayn't have been countermanding he 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	V-ing form
may I countermand? may you countermand? may he countermand? may we countermand? may you countermand? may they countermand?	may I be countermanding? may you be countermanding? may he be countermanding? may we be countermanding? may you be countermanding? may they be countermanding?
Perfect	V-ing perfect
may I have countermanded? may you have countermanded? may he have countermanded? may we have countermanded? may you have countermanded? may they have countermanded?	may I have been countermanding? may you have been countermanding? may he have been countermanding? may we have been countermanding? may you have been countermanding? may they have been countermanding?

Interro-negative form

Simple form	V-ing form
mayn't I countermand? mayn't you countermand? mayn't he countermand? mayn't we countermand? mayn't you countermand? mayn't they countermand?	mayn't I be countermanding? mayn't you be countermanding? mayn't he be countermanding? mayn't we be countermanding? mayn't you be countermanding? mayn't they be countermanding?
Perfect	V-ing perfect
mayn't I have countermanded? mayn't you have countermanded? mayn't he have countermanded? mayn't we have countermanded? mayn't you have countermanded? mayn't they have countermanded?	mayn't I have been countermanding? mayn't you have been countermanding? mayn't he have been countermanding? mayn't we have been countermanding? mayn't you have been countermanding? mayn't they have been countermanding?