I could select you could select he could select we could select you could select they could select
Forma con V-ing
I could be selecting you could be selecting he could be selecting we could be selecting you could be selecting they could be selecting
Perfecto
I could have selected you could have selected he could have selected we could have selected you could have selected they could have selected
Perfecto con V-ing
I could have been selecting you could have been selecting he could have been selecting we could have been selecting you could have been selecting they could have been selecting
Negación
Forma simple
I could not select you could not select he could not select we could not select you could not select they could not select
Forma con V-ing
I could not be selecting you could not be selecting he could not be selecting we could not be selecting you could not be selecting they could not be selecting
Perfecto
I could not have selected you could not have selected he could not have selected we could not have selected you could not have selected they could not have selected
Perfecto con V-ing
I could not have been selecting you could not have been selecting he could not have been selecting we could not have been selecting you could not have been selecting they could not have been selecting
Forma interrogativa
Forma simple
could I select? could you select? could he select? could we select? could you select? could they select?
Forma con V-ing
could I be selecting? could you be selecting? could he be selecting? could we be selecting? could you be selecting? could they be selecting?
Perfecto
could I have selected? could you have selected? could he have selected? could we have selected? could you have selected? could they have selected?
Perfecto con V-ing
could I have been selecting? could you have been selecting? could he have been selecting? could we have been selecting? could you have been selecting? could they have been selecting?
Forma interro-negativa
Forma simple
could I not select? could you not select? could he not select? could we not select? could you not select? could they not select?
Forma con V-ing
could I not be selecting? could you not be selecting? could he not be selecting? could we not be selecting? could you not be selecting? could they not be selecting?
Perfecto
could I not have selected? could you not have selected? could he not have selected? could we not have selected? could you not have selected? could they not have selected?
Perfecto con V-ing
could I not have been selecting? could you not have been selecting? could he not have been selecting? could we not have been selecting? could you not have been selecting? could they not have been selecting?