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