I could devalue you could devalue he could devalue we could devalue you could devalue they could devalue
Forma con V-ing
I could be devaluing you could be devaluing he could be devaluing we could be devaluing you could be devaluing they could be devaluing
Perfecto
I could have devalued you could have devalued he could have devalued we could have devalued you could have devalued they could have devalued
Perfecto con V-ing
I could have been devaluing you could have been devaluing he could have been devaluing we could have been devaluing you could have been devaluing they could have been devaluing
Negación
Forma simple
I couldn't devalue you couldn't devalue he couldn't devalue we couldn't devalue you couldn't devalue they couldn't devalue
Forma con V-ing
I couldn't be devaluing you couldn't be devaluing he couldn't be devaluing we couldn't be devaluing you couldn't be devaluing they couldn't be devaluing
Perfecto
I couldn't have devalued you couldn't have devalued he couldn't have devalued we couldn't have devalued you couldn't have devalued they couldn't have devalued
Perfecto con V-ing
I couldn't have been devaluing you couldn't have been devaluing he couldn't have been devaluing we couldn't have been devaluing you couldn't have been devaluing they couldn't have been devaluing
Forma interrogativa
Forma simple
could I devalue? could you devalue? could he devalue? could we devalue? could you devalue? could they devalue?
Forma con V-ing
could I be devaluing? could you be devaluing? could he be devaluing? could we be devaluing? could you be devaluing? could they be devaluing?
Perfecto
could I have devalued? could you have devalued? could he have devalued? could we have devalued? could you have devalued? could they have devalued?
Perfecto con V-ing
could I have been devaluing? could you have been devaluing? could he have been devaluing? could we have been devaluing? could you have been devaluing? could they have been devaluing?
Forma interro-negativa
Forma simple
couldn't I devalue? couldn't you devalue? couldn't he devalue? couldn't we devalue? couldn't you devalue? couldn't they devalue?
Forma con V-ing
couldn't I be devaluing? couldn't you be devaluing? couldn't he be devaluing? couldn't we be devaluing? couldn't you be devaluing? couldn't they be devaluing?
Perfecto
couldn't I have devalued? couldn't you have devalued? couldn't he have devalued? couldn't we have devalued? couldn't you have devalued? couldn't they have devalued?
Perfecto con V-ing
couldn't I have been devaluing? couldn't you have been devaluing? couldn't he have been devaluing? couldn't we have been devaluing? couldn't you have been devaluing? couldn't they have been devaluing?