I could up you could up he could up we could up you could up they could up
Forma con V-ing
I could be upping you could be upping he could be upping we could be upping you could be upping they could be upping
Perfecto
I could have upped you could have upped he could have upped we could have upped you could have upped they could have upped
Perfecto con V-ing
I could have been upping you could have been upping he could have been upping we could have been upping you could have been upping they could have been upping
Negación
Forma simple
I could not up you could not up he could not up we could not up you could not up they could not up
Forma con V-ing
I could not be upping you could not be upping he could not be upping we could not be upping you could not be upping they could not be upping
Perfecto
I could not have upped you could not have upped he could not have upped we could not have upped you could not have upped they could not have upped
Perfecto con V-ing
I could not have been upping you could not have been upping he could not have been upping we could not have been upping you could not have been upping they could not have been upping
Forma interrogativa
Forma simple
could I up? could you up? could he up? could we up? could you up? could they up?
Forma con V-ing
could I be upping? could you be upping? could he be upping? could we be upping? could you be upping? could they be upping?
Perfecto
could I have upped? could you have upped? could he have upped? could we have upped? could you have upped? could they have upped?
Perfecto con V-ing
could I have been upping? could you have been upping? could he have been upping? could we have been upping? could you have been upping? could they have been upping?
Forma interro-negativa
Forma simple
could I not up? could you not up? could he not up? could we not up? could you not up? could they not up?
Forma con V-ing
could I not be upping? could you not be upping? could he not be upping? could we not be upping? could you not be upping? could they not be upping?
Perfecto
could I not have upped? could you not have upped? could he not have upped? could we not have upped? could you not have upped? could they not have upped?
Perfecto con V-ing
could I not have been upping? could you not have been upping? could he not have been upping? could we not have been upping? could you not have been upping? could they not have been upping?