I could postpone you could postpone she could postpone we could postpone you could postpone they could postpone
Forma con V-ing
I could be postponing you could be postponing she could be postponing we could be postponing you could be postponing they could be postponing
Perfecto
I could have postponed you could have postponed she could have postponed we could have postponed you could have postponed they could have postponed
Perfecto con V-ing
I could have been postponing you could have been postponing she could have been postponing we could have been postponing you could have been postponing they could have been postponing
Negación
Forma simple
I could not postpone you could not postpone she could not postpone we could not postpone you could not postpone they could not postpone
Forma con V-ing
I could not be postponing you could not be postponing she could not be postponing we could not be postponing you could not be postponing they could not be postponing
Perfecto
I could not have postponed you could not have postponed she could not have postponed we could not have postponed you could not have postponed they could not have postponed
Perfecto con V-ing
I could not have been postponing you could not have been postponing she could not have been postponing we could not have been postponing you could not have been postponing they could not have been postponing
Forma interrogativa
Forma simple
could I postpone? could you postpone? could she postpone? could we postpone? could you postpone? could they postpone?
Forma con V-ing
could I be postponing? could you be postponing? could she be postponing? could we be postponing? could you be postponing? could they be postponing?
Perfecto
could I have postponed? could you have postponed? could she have postponed? could we have postponed? could you have postponed? could they have postponed?
Perfecto con V-ing
could I have been postponing? could you have been postponing? could she have been postponing? could we have been postponing? could you have been postponing? could they have been postponing?
Forma interro-negativa
Forma simple
could I not postpone? could you not postpone? could she not postpone? could we not postpone? could you not postpone? could they not postpone?
Forma con V-ing
could I not be postponing? could you not be postponing? could she not be postponing? could we not be postponing? could you not be postponing? could they not be postponing?
Perfecto
could I not have postponed? could you not have postponed? could she not have postponed? could we not have postponed? could you not have postponed? could they not have postponed?
Perfecto con V-ing
could I not have been postponing? could you not have been postponing? could she not have been postponing? could we not have been postponing? could you not have been postponing? could they not have been postponing?