I could pick you could pick he could pick we could pick you could pick they could pick
Forma con V-ing
I could be picking you could be picking he could be picking we could be picking you could be picking they could be picking
Perfecto
I could have picked you could have picked he could have picked we could have picked you could have picked they could have picked
Perfecto con V-ing
I could have been picking you could have been picking he could have been picking we could have been picking you could have been picking they could have been picking
Negación
Forma simple
I could not pick you could not pick he could not pick we could not pick you could not pick they could not pick
Forma con V-ing
I could not be picking you could not be picking he could not be picking we could not be picking you could not be picking they could not be picking
Perfecto
I could not have picked you could not have picked he could not have picked we could not have picked you could not have picked they could not have picked
Perfecto con V-ing
I could not have been picking you could not have been picking he could not have been picking we could not have been picking you could not have been picking they could not have been picking
Forma interrogativa
Forma simple
could I pick? could you pick? could he pick? could we pick? could you pick? could they pick?
Forma con V-ing
could I be picking? could you be picking? could he be picking? could we be picking? could you be picking? could they be picking?
Perfecto
could I have picked? could you have picked? could he have picked? could we have picked? could you have picked? could they have picked?
Perfecto con V-ing
could I have been picking? could you have been picking? could he have been picking? could we have been picking? could you have been picking? could they have been picking?
Forma interro-negativa
Forma simple
could I not pick? could you not pick? could he not pick? could we not pick? could you not pick? could they not pick?
Forma con V-ing
could I not be picking? could you not be picking? could he not be picking? could we not be picking? could you not be picking? could they not be picking?
Perfecto
could I not have picked? could you not have picked? could he not have picked? could we not have picked? could you not have picked? could they not have picked?
Perfecto con V-ing
could I not have been picking? could you not have been picking? could he not have been picking? could we not have been picking? could you not have been picking? could they not have been picking?