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