I could brighten you could brighten she could brighten we could brighten you could brighten they could brighten
Forma con V-ing
I could be brightening you could be brightening she could be brightening we could be brightening you could be brightening they could be brightening
Perfecto
I could have brightened you could have brightened she could have brightened we could have brightened you could have brightened they could have brightened
Perfecto con V-ing
I could have been brightening you could have been brightening she could have been brightening we could have been brightening you could have been brightening they could have been brightening
Negación
Forma simple
I could not brighten you could not brighten she could not brighten we could not brighten you could not brighten they could not brighten
Forma con V-ing
I could not be brightening you could not be brightening she could not be brightening we could not be brightening you could not be brightening they could not be brightening
Perfecto
I could not have brightened you could not have brightened she could not have brightened we could not have brightened you could not have brightened they could not have brightened
Perfecto con V-ing
I could not have been brightening you could not have been brightening she could not have been brightening we could not have been brightening you could not have been brightening they could not have been brightening
Forma interrogativa
Forma simple
could I brighten? could you brighten? could she brighten? could we brighten? could you brighten? could they brighten?
Forma con V-ing
could I be brightening? could you be brightening? could she be brightening? could we be brightening? could you be brightening? could they be brightening?
Perfecto
could I have brightened? could you have brightened? could she have brightened? could we have brightened? could you have brightened? could they have brightened?
Perfecto con V-ing
could I have been brightening? could you have been brightening? could she have been brightening? could we have been brightening? could you have been brightening? could they have been brightening?
Forma interro-negativa
Forma simple
could I not brighten? could you not brighten? could she not brighten? could we not brighten? could you not brighten? could they not brighten?
Forma con V-ing
could I not be brightening? could you not be brightening? could she not be brightening? could we not be brightening? could you not be brightening? could they not be brightening?
Perfecto
could I not have brightened? could you not have brightened? could she not have brightened? could we not have brightened? could you not have brightened? could they not have brightened?
Perfecto con V-ing
could I not have been brightening? could you not have been brightening? could she not have been brightening? could we not have been brightening? could you not have been brightening? could they not have been brightening?