I could don you could don he could don we could don you could don they could don
Forma con V-ing
I could be donning you could be donning he could be donning we could be donning you could be donning they could be donning
Perfecto
I could have donned you could have donned he could have donned we could have donned you could have donned they could have donned
Perfecto con V-ing
I could have been donning you could have been donning he could have been donning we could have been donning you could have been donning they could have been donning
Negación
Forma simple
I could not don you could not don he could not don we could not don you could not don they could not don
Forma con V-ing
I could not be donning you could not be donning he could not be donning we could not be donning you could not be donning they could not be donning
Perfecto
I could not have donned you could not have donned he could not have donned we could not have donned you could not have donned they could not have donned
Perfecto con V-ing
I could not have been donning you could not have been donning he could not have been donning we could not have been donning you could not have been donning they could not have been donning
Forma interrogativa
Forma simple
could I don? could you don? could he don? could we don? could you don? could they don?
Forma con V-ing
could I be donning? could you be donning? could he be donning? could we be donning? could you be donning? could they be donning?
Perfecto
could I have donned? could you have donned? could he have donned? could we have donned? could you have donned? could they have donned?
Perfecto con V-ing
could I have been donning? could you have been donning? could he have been donning? could we have been donning? could you have been donning? could they have been donning?
Forma interro-negativa
Forma simple
could I not don? could you not don? could he not don? could we not don? could you not don? could they not don?
Forma con V-ing
could I not be donning? could you not be donning? could he not be donning? could we not be donning? could you not be donning? could they not be donning?
Perfecto
could I not have donned? could you not have donned? could he not have donned? could we not have donned? could you not have donned? could they not have donned?
Perfecto con V-ing
could I not have been donning? could you not have been donning? could he not have been donning? could we not have been donning? could you not have been donning? could they not have been donning?