I could compete you could compete she could compete we could compete you could compete they could compete
Forma con V-ing
I could be competing you could be competing she could be competing we could be competing you could be competing they could be competing
Perfecto
I could have competed you could have competed she could have competed we could have competed you could have competed they could have competed
Perfecto con V-ing
I could have been competing you could have been competing she could have been competing we could have been competing you could have been competing they could have been competing
Negación
Forma simple
I could not compete you could not compete she could not compete we could not compete you could not compete they could not compete
Forma con V-ing
I could not be competing you could not be competing she could not be competing we could not be competing you could not be competing they could not be competing
Perfecto
I could not have competed you could not have competed she could not have competed we could not have competed you could not have competed they could not have competed
Perfecto con V-ing
I could not have been competing you could not have been competing she could not have been competing we could not have been competing you could not have been competing they could not have been competing
Forma interrogativa
Forma simple
could I compete? could you compete? could she compete? could we compete? could you compete? could they compete?
Forma con V-ing
could I be competing? could you be competing? could she be competing? could we be competing? could you be competing? could they be competing?
Perfecto
could I have competed? could you have competed? could she have competed? could we have competed? could you have competed? could they have competed?
Perfecto con V-ing
could I have been competing? could you have been competing? could she have been competing? could we have been competing? could you have been competing? could they have been competing?
Forma interro-negativa
Forma simple
could I not compete? could you not compete? could she not compete? could we not compete? could you not compete? could they not compete?
Forma con V-ing
could I not be competing? could you not be competing? could she not be competing? could we not be competing? could you not be competing? could they not be competing?
Perfecto
could I not have competed? could you not have competed? could she not have competed? could we not have competed? could you not have competed? could they not have competed?
Perfecto con V-ing
could I not have been competing? could you not have been competing? could she not have been competing? could we not have been competing? could you not have been competing? could they not have been competing?