I could duel you could duel she could duel we could duel you could duel they could duel
Forma con V-ing
I could be dueling you could be dueling she could be dueling we could be dueling you could be dueling they could be dueling
Perfecto
I could have dueled you could have dueled she could have dueled we could have dueled you could have dueled they could have dueled
Perfecto con V-ing
I could have been dueling you could have been dueling she could have been dueling we could have been dueling you could have been dueling they could have been dueling
Negación
Forma simple
I couldn't duel you couldn't duel she couldn't duel we couldn't duel you couldn't duel they couldn't duel
Forma con V-ing
I couldn't be dueling you couldn't be dueling she couldn't be dueling we couldn't be dueling you couldn't be dueling they couldn't be dueling
Perfecto
I couldn't have dueled you couldn't have dueled she couldn't have dueled we couldn't have dueled you couldn't have dueled they couldn't have dueled
Perfecto con V-ing
I couldn't have been dueling you couldn't have been dueling she couldn't have been dueling we couldn't have been dueling you couldn't have been dueling they couldn't have been dueling
Forma interrogativa
Forma simple
could I duel? could you duel? could she duel? could we duel? could you duel? could they duel?
Forma con V-ing
could I be dueling? could you be dueling? could she be dueling? could we be dueling? could you be dueling? could they be dueling?
Perfecto
could I have dueled? could you have dueled? could she have dueled? could we have dueled? could you have dueled? could they have dueled?
Perfecto con V-ing
could I have been dueling? could you have been dueling? could she have been dueling? could we have been dueling? could you have been dueling? could they have been dueling?
Forma interro-negativa
Forma simple
couldn't I duel? couldn't you duel? couldn't she duel? couldn't we duel? couldn't you duel? couldn't they duel?
Forma con V-ing
couldn't I be dueling? couldn't you be dueling? couldn't she be dueling? couldn't we be dueling? couldn't you be dueling? couldn't they be dueling?
Perfecto
couldn't I have dueled? couldn't you have dueled? couldn't she have dueled? couldn't we have dueled? couldn't you have dueled? couldn't they have dueled?
Perfecto con V-ing
couldn't I have been dueling? couldn't you have been dueling? couldn't she have been dueling? couldn't we have been dueling? couldn't you have been dueling? couldn't they have been dueling?