I could request you could request he could request we could request you could request they could request
Forma com V-ing
I could be requesting you could be requesting he could be requesting we could be requesting you could be requesting they could be requesting
Perfeito
I could have requested you could have requested he could have requested we could have requested you could have requested they could have requested
Perfeito com V-ing
I could have been requesting you could have been requesting he could have been requesting we could have been requesting you could have been requesting they could have been requesting
Negação
Forma simple
I could not request you could not request he could not request we could not request you could not request they could not request
Forma com V-ing
I could not be requesting you could not be requesting he could not be requesting we could not be requesting you could not be requesting they could not be requesting
Perfeito
I could not have requested you could not have requested he could not have requested we could not have requested you could not have requested they could not have requested
Perfeito com V-ing
I could not have been requesting you could not have been requesting he could not have been requesting we could not have been requesting you could not have been requesting they could not have been requesting
Forma interrogativa
Forma simple
could I request? could you request? could he request? could we request? could you request? could they request?
Forma com V-ing
could I be requesting? could you be requesting? could he be requesting? could we be requesting? could you be requesting? could they be requesting?
Perfeito
could I have requested? could you have requested? could he have requested? could we have requested? could you have requested? could they have requested?
Perfeito com V-ing
could I have been requesting? could you have been requesting? could he have been requesting? could we have been requesting? could you have been requesting? could they have been requesting?
Forma interro-Negação
Forma simple
could I not request? could you not request? could he not request? could we not request? could you not request? could they not request?
Forma com V-ing
could I not be requesting? could you not be requesting? could he not be requesting? could we not be requesting? could you not be requesting? could they not be requesting?
Perfeito
could I not have requested? could you not have requested? could he not have requested? could we not have requested? could you not have requested? could they not have requested?
Perfeito com V-ing
could I not have been requesting? could you not have been requesting? could he not have been requesting? could we not have been requesting? could you not have been requesting? could they not have been requesting?