I could gather you could gather he could gather we could gather you could gather they could gather
Forma con V-ing
I could be gathering you could be gathering he could be gathering we could be gathering you could be gathering they could be gathering
Perfecto
I could have gathered you could have gathered he could have gathered we could have gathered you could have gathered they could have gathered
Perfecto con V-ing
I could have been gathering you could have been gathering he could have been gathering we could have been gathering you could have been gathering they could have been gathering
Negación
Forma simple
I could not gather you could not gather he could not gather we could not gather you could not gather they could not gather
Forma con V-ing
I could not be gathering you could not be gathering he could not be gathering we could not be gathering you could not be gathering they could not be gathering
Perfecto
I could not have gathered you could not have gathered he could not have gathered we could not have gathered you could not have gathered they could not have gathered
Perfecto con V-ing
I could not have been gathering you could not have been gathering he could not have been gathering we could not have been gathering you could not have been gathering they could not have been gathering
Forma interrogativa
Forma simple
could I gather? could you gather? could he gather? could we gather? could you gather? could they gather?
Forma con V-ing
could I be gathering? could you be gathering? could he be gathering? could we be gathering? could you be gathering? could they be gathering?
Perfecto
could I have gathered? could you have gathered? could he have gathered? could we have gathered? could you have gathered? could they have gathered?
Perfecto con V-ing
could I have been gathering? could you have been gathering? could he have been gathering? could we have been gathering? could you have been gathering? could they have been gathering?
Forma interro-negativa
Forma simple
could I not gather? could you not gather? could he not gather? could we not gather? could you not gather? could they not gather?
Forma con V-ing
could I not be gathering? could you not be gathering? could he not be gathering? could we not be gathering? could you not be gathering? could they not be gathering?
Perfecto
could I not have gathered? could you not have gathered? could he not have gathered? could we not have gathered? could you not have gathered? could they not have gathered?
Perfecto con V-ing
could I not have been gathering? could you not have been gathering? could he not have been gathering? could we not have been gathering? could you not have been gathering? could they not have been gathering?