I could unmask you could unmask he could unmask we could unmask you could unmask they could unmask
Forma con V-ing
I could be unmasking you could be unmasking he could be unmasking we could be unmasking you could be unmasking they could be unmasking
Perfecto
I could have unmasked you could have unmasked he could have unmasked we could have unmasked you could have unmasked they could have unmasked
Perfecto con V-ing
I could have been unmasking you could have been unmasking he could have been unmasking we could have been unmasking you could have been unmasking they could have been unmasking
Negación
Forma simple
I could not unmask you could not unmask he could not unmask we could not unmask you could not unmask they could not unmask
Forma con V-ing
I could not be unmasking you could not be unmasking he could not be unmasking we could not be unmasking you could not be unmasking they could not be unmasking
Perfecto
I could not have unmasked you could not have unmasked he could not have unmasked we could not have unmasked you could not have unmasked they could not have unmasked
Perfecto con V-ing
I could not have been unmasking you could not have been unmasking he could not have been unmasking we could not have been unmasking you could not have been unmasking they could not have been unmasking
Forma interrogativa
Forma simple
could I unmask? could you unmask? could he unmask? could we unmask? could you unmask? could they unmask?
Forma con V-ing
could I be unmasking? could you be unmasking? could he be unmasking? could we be unmasking? could you be unmasking? could they be unmasking?
Perfecto
could I have unmasked? could you have unmasked? could he have unmasked? could we have unmasked? could you have unmasked? could they have unmasked?
Perfecto con V-ing
could I have been unmasking? could you have been unmasking? could he have been unmasking? could we have been unmasking? could you have been unmasking? could they have been unmasking?
Forma interro-negativa
Forma simple
could I not unmask? could you not unmask? could he not unmask? could we not unmask? could you not unmask? could they not unmask?
Forma con V-ing
could I not be unmasking? could you not be unmasking? could he not be unmasking? could we not be unmasking? could you not be unmasking? could they not be unmasking?
Perfecto
could I not have unmasked? could you not have unmasked? could he not have unmasked? could we not have unmasked? could you not have unmasked? could they not have unmasked?
Perfecto con V-ing
could I not have been unmasking? could you not have been unmasking? could he not have been unmasking? could we not have been unmasking? could you not have been unmasking? could they not have been unmasking?