I could invoke you could invoke she could invoke we could invoke you could invoke they could invoke
Forma con V-ing
I could be invoking you could be invoking she could be invoking we could be invoking you could be invoking they could be invoking
Perfecto
I could have invoked you could have invoked she could have invoked we could have invoked you could have invoked they could have invoked
Perfecto con V-ing
I could have been invoking you could have been invoking she could have been invoking we could have been invoking you could have been invoking they could have been invoking
Negación
Forma simple
I could not invoke you could not invoke she could not invoke we could not invoke you could not invoke they could not invoke
Forma con V-ing
I could not be invoking you could not be invoking she could not be invoking we could not be invoking you could not be invoking they could not be invoking
Perfecto
I could not have invoked you could not have invoked she could not have invoked we could not have invoked you could not have invoked they could not have invoked
Perfecto con V-ing
I could not have been invoking you could not have been invoking she could not have been invoking we could not have been invoking you could not have been invoking they could not have been invoking
Forma interrogativa
Forma simple
could I invoke? could you invoke? could she invoke? could we invoke? could you invoke? could they invoke?
Forma con V-ing
could I be invoking? could you be invoking? could she be invoking? could we be invoking? could you be invoking? could they be invoking?
Perfecto
could I have invoked? could you have invoked? could she have invoked? could we have invoked? could you have invoked? could they have invoked?
Perfecto con V-ing
could I have been invoking? could you have been invoking? could she have been invoking? could we have been invoking? could you have been invoking? could they have been invoking?
Forma interro-negativa
Forma simple
could I not invoke? could you not invoke? could she not invoke? could we not invoke? could you not invoke? could they not invoke?
Forma con V-ing
could I not be invoking? could you not be invoking? could she not be invoking? could we not be invoking? could you not be invoking? could they not be invoking?
Perfecto
could I not have invoked? could you not have invoked? could she not have invoked? could we not have invoked? could you not have invoked? could they not have invoked?
Perfecto con V-ing
could I not have been invoking? could you not have been invoking? could she not have been invoking? could we not have been invoking? could you not have been invoking? could they not have been invoking?