I could underfeed you could underfeed he could underfeed we could underfeed you could underfeed they could underfeed
Forma con V-ing
I could be underfeeding you could be underfeeding he could be underfeeding we could be underfeeding you could be underfeeding they could be underfeeding
Perfecto
I could have underfed you could have underfed he could have underfed we could have underfed you could have underfed they could have underfed
Perfecto con V-ing
I could have been underfeeding you could have been underfeeding he could have been underfeeding we could have been underfeeding you could have been underfeeding they could have been underfeeding
Negación
Forma simple
I could not underfeed you could not underfeed he could not underfeed we could not underfeed you could not underfeed they could not underfeed
Forma con V-ing
I could not be underfeeding you could not be underfeeding he could not be underfeeding we could not be underfeeding you could not be underfeeding they could not be underfeeding
Perfecto
I could not have underfed you could not have underfed he could not have underfed we could not have underfed you could not have underfed they could not have underfed
Perfecto con V-ing
I could not have been underfeeding you could not have been underfeeding he could not have been underfeeding we could not have been underfeeding you could not have been underfeeding they could not have been underfeeding
Forma interrogativa
Forma simple
could I underfeed? could you underfeed? could he underfeed? could we underfeed? could you underfeed? could they underfeed?
Forma con V-ing
could I be underfeeding? could you be underfeeding? could he be underfeeding? could we be underfeeding? could you be underfeeding? could they be underfeeding?
Perfecto
could I have underfed? could you have underfed? could he have underfed? could we have underfed? could you have underfed? could they have underfed?
Perfecto con V-ing
could I have been underfeeding? could you have been underfeeding? could he have been underfeeding? could we have been underfeeding? could you have been underfeeding? could they have been underfeeding?
Forma interro-negativa
Forma simple
could I not underfeed? could you not underfeed? could he not underfeed? could we not underfeed? could you not underfeed? could they not underfeed?
Forma con V-ing
could I not be underfeeding? could you not be underfeeding? could he not be underfeeding? could we not be underfeeding? could you not be underfeeding? could they not be underfeeding?
Perfecto
could I not have underfed? could you not have underfed? could he not have underfed? could we not have underfed? could you not have underfed? could they not have underfed?
Perfecto con V-ing
could I not have been underfeeding? could you not have been underfeeding? could he not have been underfeeding? could we not have been underfeeding? could you not have been underfeeding? could they not have been underfeeding?