I could discover you could discover she could discover we could discover you could discover they could discover
Forma com V-ing
I could be discovering you could be discovering she could be discovering we could be discovering you could be discovering they could be discovering
Perfeito
I could have discovered you could have discovered she could have discovered we could have discovered you could have discovered they could have discovered
Perfeito com V-ing
I could have been discovering you could have been discovering she could have been discovering we could have been discovering you could have been discovering they could have been discovering
Negação
Forma simple
I could not discover you could not discover she could not discover we could not discover you could not discover they could not discover
Forma com V-ing
I could not be discovering you could not be discovering she could not be discovering we could not be discovering you could not be discovering they could not be discovering
Perfeito
I could not have discovered you could not have discovered she could not have discovered we could not have discovered you could not have discovered they could not have discovered
Perfeito com V-ing
I could not have been discovering you could not have been discovering she could not have been discovering we could not have been discovering you could not have been discovering they could not have been discovering
Forma interrogativa
Forma simple
could I discover? could you discover? could she discover? could we discover? could you discover? could they discover?
Forma com V-ing
could I be discovering? could you be discovering? could she be discovering? could we be discovering? could you be discovering? could they be discovering?
Perfeito
could I have discovered? could you have discovered? could she have discovered? could we have discovered? could you have discovered? could they have discovered?
Perfeito com V-ing
could I have been discovering? could you have been discovering? could she have been discovering? could we have been discovering? could you have been discovering? could they have been discovering?
Forma interro-Negação
Forma simple
could I not discover? could you not discover? could she not discover? could we not discover? could you not discover? could they not discover?
Forma com V-ing
could I not be discovering? could you not be discovering? could she not be discovering? could we not be discovering? could you not be discovering? could they not be discovering?
Perfeito
could I not have discovered? could you not have discovered? could she not have discovered? could we not have discovered? could you not have discovered? could they not have discovered?
Perfeito com V-ing
could I not have been discovering? could you not have been discovering? could she not have been discovering? could we not have been discovering? could you not have been discovering? could they not have been discovering?