I could blister you could blister she could blister we could blister you could blister they could blister
Forma con V-ing
I could be blistering you could be blistering she could be blistering we could be blistering you could be blistering they could be blistering
Perfecto
I could have blistered you could have blistered she could have blistered we could have blistered you could have blistered they could have blistered
Perfecto con V-ing
I could have been blistering you could have been blistering she could have been blistering we could have been blistering you could have been blistering they could have been blistering
Negación
Forma simple
I could not blister you could not blister she could not blister we could not blister you could not blister they could not blister
Forma con V-ing
I could not be blistering you could not be blistering she could not be blistering we could not be blistering you could not be blistering they could not be blistering
Perfecto
I could not have blistered you could not have blistered she could not have blistered we could not have blistered you could not have blistered they could not have blistered
Perfecto con V-ing
I could not have been blistering you could not have been blistering she could not have been blistering we could not have been blistering you could not have been blistering they could not have been blistering
Forma interrogativa
Forma simple
could I blister? could you blister? could she blister? could we blister? could you blister? could they blister?
Forma con V-ing
could I be blistering? could you be blistering? could she be blistering? could we be blistering? could you be blistering? could they be blistering?
Perfecto
could I have blistered? could you have blistered? could she have blistered? could we have blistered? could you have blistered? could they have blistered?
Perfecto con V-ing
could I have been blistering? could you have been blistering? could she have been blistering? could we have been blistering? could you have been blistering? could they have been blistering?
Forma interro-negativa
Forma simple
could I not blister? could you not blister? could she not blister? could we not blister? could you not blister? could they not blister?
Forma con V-ing
could I not be blistering? could you not be blistering? could she not be blistering? could we not be blistering? could you not be blistering? could they not be blistering?
Perfecto
could I not have blistered? could you not have blistered? could she not have blistered? could we not have blistered? could you not have blistered? could they not have blistered?
Perfecto con V-ing
could I not have been blistering? could you not have been blistering? could she not have been blistering? could we not have been blistering? could you not have been blistering? could they not have been blistering?