I could convert you could convert he could convert we could convert you could convert they could convert
Forma con V-ing
I could be converting you could be converting he could be converting we could be converting you could be converting they could be converting
Perfecto
I could have converted you could have converted he could have converted we could have converted you could have converted they could have converted
Perfecto con V-ing
I could have been converting you could have been converting he could have been converting we could have been converting you could have been converting they could have been converting
Negación
Forma simple
I could not convert you could not convert he could not convert we could not convert you could not convert they could not convert
Forma con V-ing
I could not be converting you could not be converting he could not be converting we could not be converting you could not be converting they could not be converting
Perfecto
I could not have converted you could not have converted he could not have converted we could not have converted you could not have converted they could not have converted
Perfecto con V-ing
I could not have been converting you could not have been converting he could not have been converting we could not have been converting you could not have been converting they could not have been converting
Forma interrogativa
Forma simple
could I convert? could you convert? could he convert? could we convert? could you convert? could they convert?
Forma con V-ing
could I be converting? could you be converting? could he be converting? could we be converting? could you be converting? could they be converting?
Perfecto
could I have converted? could you have converted? could he have converted? could we have converted? could you have converted? could they have converted?
Perfecto con V-ing
could I have been converting? could you have been converting? could he have been converting? could we have been converting? could you have been converting? could they have been converting?
Forma interro-negativa
Forma simple
could I not convert? could you not convert? could he not convert? could we not convert? could you not convert? could they not convert?
Forma con V-ing
could I not be converting? could you not be converting? could he not be converting? could we not be converting? could you not be converting? could they not be converting?
Perfecto
could I not have converted? could you not have converted? could he not have converted? could we not have converted? could you not have converted? could they not have converted?
Perfecto con V-ing
could I not have been converting? could you not have been converting? could he not have been converting? could we not have been converting? could you not have been converting? could they not have been converting?