English verb conjugation
COULD COUNTERMAND

Regular verb: countermand - countermanded - countermanded

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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