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