I could star you could star he could star we could star you could star they could star
Forma con V-ing
I could be starring you could be starring he could be starring we could be starring you could be starring they could be starring
Perfecto
I could have starred you could have starred he could have starred we could have starred you could have starred they could have starred
Perfecto con V-ing
I could have been starring you could have been starring he could have been starring we could have been starring you could have been starring they could have been starring
Negación
Forma simple
I could not star you could not star he could not star we could not star you could not star they could not star
Forma con V-ing
I could not be starring you could not be starring he could not be starring we could not be starring you could not be starring they could not be starring
Perfecto
I could not have starred you could not have starred he could not have starred we could not have starred you could not have starred they could not have starred
Perfecto con V-ing
I could not have been starring you could not have been starring he could not have been starring we could not have been starring you could not have been starring they could not have been starring
Forma interrogativa
Forma simple
could I star? could you star? could he star? could we star? could you star? could they star?
Forma con V-ing
could I be starring? could you be starring? could he be starring? could we be starring? could you be starring? could they be starring?
Perfecto
could I have starred? could you have starred? could he have starred? could we have starred? could you have starred? could they have starred?
Perfecto con V-ing
could I have been starring? could you have been starring? could he have been starring? could we have been starring? could you have been starring? could they have been starring?
Forma interro-negativa
Forma simple
could I not star? could you not star? could he not star? could we not star? could you not star? could they not star?
Forma con V-ing
could I not be starring? could you not be starring? could he not be starring? could we not be starring? could you not be starring? could they not be starring?
Perfecto
could I not have starred? could you not have starred? could he not have starred? could we not have starred? could you not have starred? could they not have starred?
Perfecto con V-ing
could I not have been starring? could you not have been starring? could he not have been starring? could we not have been starring? could you not have been starring? could they not have been starring?