could countermand
Verbo regular: countermand - countermanded- countermanded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?