I could discuss you could discuss she could discuss we could discuss you could discuss they could discuss
Forma com V-ing
I could be discussing you could be discussing she could be discussing we could be discussing you could be discussing they could be discussing
Perfeito
I could have discussed you could have discussed she could have discussed we could have discussed you could have discussed they could have discussed
Perfeito com V-ing
I could have been discussing you could have been discussing she could have been discussing we could have been discussing you could have been discussing they could have been discussing
Negação
Forma simple
I could not discuss you could not discuss she could not discuss we could not discuss you could not discuss they could not discuss
Forma com V-ing
I could not be discussing you could not be discussing she could not be discussing we could not be discussing you could not be discussing they could not be discussing
Perfeito
I could not have discussed you could not have discussed she could not have discussed we could not have discussed you could not have discussed they could not have discussed
Perfeito com V-ing
I could not have been discussing you could not have been discussing she could not have been discussing we could not have been discussing you could not have been discussing they could not have been discussing
Forma interrogativa
Forma simple
could I discuss? could you discuss? could she discuss? could we discuss? could you discuss? could they discuss?
Forma com V-ing
could I be discussing? could you be discussing? could she be discussing? could we be discussing? could you be discussing? could they be discussing?
Perfeito
could I have discussed? could you have discussed? could she have discussed? could we have discussed? could you have discussed? could they have discussed?
Perfeito com V-ing
could I have been discussing? could you have been discussing? could she have been discussing? could we have been discussing? could you have been discussing? could they have been discussing?
Forma interro-Negação
Forma simple
could I not discuss? could you not discuss? could she not discuss? could we not discuss? could you not discuss? could they not discuss?
Forma com V-ing
could I not be discussing? could you not be discussing? could she not be discussing? could we not be discussing? could you not be discussing? could they not be discussing?
Perfeito
could I not have discussed? could you not have discussed? could she not have discussed? could we not have discussed? could you not have discussed? could they not have discussed?
Perfeito com V-ing
could I not have been discussing? could you not have been discussing? could she not have been discussing? could we not have been discussing? could you not have been discussing? could they not have been discussing?