I could tense you could tense he could tense we could tense you could tense they could tense
Forma con V-ing
I could be tensing you could be tensing he could be tensing we could be tensing you could be tensing they could be tensing
Perfecto
I could have tensed you could have tensed he could have tensed we could have tensed you could have tensed they could have tensed
Perfecto con V-ing
I could have been tensing you could have been tensing he could have been tensing we could have been tensing you could have been tensing they could have been tensing
Negación
Forma simple
I could not tense you could not tense he could not tense we could not tense you could not tense they could not tense
Forma con V-ing
I could not be tensing you could not be tensing he could not be tensing we could not be tensing you could not be tensing they could not be tensing
Perfecto
I could not have tensed you could not have tensed he could not have tensed we could not have tensed you could not have tensed they could not have tensed
Perfecto con V-ing
I could not have been tensing you could not have been tensing he could not have been tensing we could not have been tensing you could not have been tensing they could not have been tensing
Forma interrogativa
Forma simple
could I tense? could you tense? could he tense? could we tense? could you tense? could they tense?
Forma con V-ing
could I be tensing? could you be tensing? could he be tensing? could we be tensing? could you be tensing? could they be tensing?
Perfecto
could I have tensed? could you have tensed? could he have tensed? could we have tensed? could you have tensed? could they have tensed?
Perfecto con V-ing
could I have been tensing? could you have been tensing? could he have been tensing? could we have been tensing? could you have been tensing? could they have been tensing?
Forma interro-negativa
Forma simple
could I not tense? could you not tense? could he not tense? could we not tense? could you not tense? could they not tense?
Forma con V-ing
could I not be tensing? could you not be tensing? could he not be tensing? could we not be tensing? could you not be tensing? could they not be tensing?
Perfecto
could I not have tensed? could you not have tensed? could he not have tensed? could we not have tensed? could you not have tensed? could they not have tensed?
Perfecto con V-ing
could I not have been tensing? could you not have been tensing? could he not have been tensing? could we not have been tensing? could you not have been tensing? could they not have been tensing?