Conjugación del verbo inglés
COULD DUEL

Verbo regular: duel - dueled - dueled

Afirmación

Forma simple	Forma con V-ing
I could duel you could duel he could duel we could duel you could duel they could duel	I could be dueling you could be dueling he could be dueling we could be dueling you could be dueling they could be dueling
Perfecto	Perfecto con V-ing
I could have dueled you could have dueled he could have dueled we could have dueled you could have dueled they could have dueled	I could have been dueling you could have been dueling he could have been dueling we could have been dueling you could have been dueling they could have been dueling

Negación

Forma simple	Forma con V-ing
I could not duel you could not duel he could not duel we could not duel you could not duel they could not duel	I could not be dueling you could not be dueling he could not be dueling we could not be dueling you could not be dueling they could not be dueling
Perfecto	Perfecto con V-ing
I could not have dueled you could not have dueled he could not have dueled we could not have dueled you could not have dueled they could not have dueled	I could not have been dueling you could not have been dueling he could not have been dueling we could not have been dueling you could not have been dueling they could not have been dueling

Forma interrogativa

Forma simple	Forma con V-ing
could I duel? could you duel? could he duel? could we duel? could you duel? could they duel?	could I be dueling? could you be dueling? could he be dueling? could we be dueling? could you be dueling? could they be dueling?
Perfecto	Perfecto con V-ing
could I have dueled? could you have dueled? could he have dueled? could we have dueled? could you have dueled? could they have dueled?	could I have been dueling? could you have been dueling? could he have been dueling? could we have been dueling? could you have been dueling? could they have been dueling?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not duel? could you not duel? could he not duel? could we not duel? could you not duel? could they not duel?	could I not be dueling? could you not be dueling? could he not be dueling? could we not be dueling? could you not be dueling? could they not be dueling?
Perfecto	Perfecto con V-ing
could I not have dueled? could you not have dueled? could he not have dueled? could we not have dueled? could you not have dueled? could they not have dueled?	could I not have been dueling? could you not have been dueling? could he not have been dueling? could we not have been dueling? could you not have been dueling? could they not have been dueling?