English verb conjugation
MUST COUNTERMAND

Regular verb: countermand - countermanded - countermanded

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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