I could mistake you could mistake he could mistake we could mistake you could mistake they could mistake
Forma con V-ing
I could be mistaking you could be mistaking he could be mistaking we could be mistaking you could be mistaking they could be mistaking
Perfecto
I could have mistaken you could have mistaken he could have mistaken we could have mistaken you could have mistaken they could have mistaken
Perfecto con V-ing
I could have been mistaking you could have been mistaking he could have been mistaking we could have been mistaking you could have been mistaking they could have been mistaking
Negación
Forma simple
I couldn't mistake you couldn't mistake he couldn't mistake we couldn't mistake you couldn't mistake they couldn't mistake
Forma con V-ing
I couldn't be mistaking you couldn't be mistaking he couldn't be mistaking we couldn't be mistaking you couldn't be mistaking they couldn't be mistaking
Perfecto
I couldn't have mistaken you couldn't have mistaken he couldn't have mistaken we couldn't have mistaken you couldn't have mistaken they couldn't have mistaken
Perfecto con V-ing
I couldn't have been mistaking you couldn't have been mistaking he couldn't have been mistaking we couldn't have been mistaking you couldn't have been mistaking they couldn't have been mistaking
Forma interrogativa
Forma simple
could I mistake? could you mistake? could he mistake? could we mistake? could you mistake? could they mistake?
Forma con V-ing
could I be mistaking? could you be mistaking? could he be mistaking? could we be mistaking? could you be mistaking? could they be mistaking?
Perfecto
could I have mistaken? could you have mistaken? could he have mistaken? could we have mistaken? could you have mistaken? could they have mistaken?
Perfecto con V-ing
could I have been mistaking? could you have been mistaking? could he have been mistaking? could we have been mistaking? could you have been mistaking? could they have been mistaking?
Forma interro-negativa
Forma simple
couldn't I mistake? couldn't you mistake? couldn't he mistake? couldn't we mistake? couldn't you mistake? couldn't they mistake?
Forma con V-ing
couldn't I be mistaking? couldn't you be mistaking? couldn't he be mistaking? couldn't we be mistaking? couldn't you be mistaking? couldn't they be mistaking?
Perfecto
couldn't I have mistaken? couldn't you have mistaken? couldn't he have mistaken? couldn't we have mistaken? couldn't you have mistaken? couldn't they have mistaken?
Perfecto con V-ing
couldn't I have been mistaking? couldn't you have been mistaking? couldn't he have been mistaking? couldn't we have been mistaking? couldn't you have been mistaking? couldn't they have been mistaking?