I could chain you could chain he could chain we could chain you could chain they could chain
Forma com V-ing
I could be chaining you could be chaining he could be chaining we could be chaining you could be chaining they could be chaining
Perfeito
I could have chained you could have chained he could have chained we could have chained you could have chained they could have chained
Perfeito com V-ing
I could have been chaining you could have been chaining he could have been chaining we could have been chaining you could have been chaining they could have been chaining
Negação
Forma simple
I could not chain you could not chain he could not chain we could not chain you could not chain they could not chain
Forma com V-ing
I could not be chaining you could not be chaining he could not be chaining we could not be chaining you could not be chaining they could not be chaining
Perfeito
I could not have chained you could not have chained he could not have chained we could not have chained you could not have chained they could not have chained
Perfeito com V-ing
I could not have been chaining you could not have been chaining he could not have been chaining we could not have been chaining you could not have been chaining they could not have been chaining
Forma interrogativa
Forma simple
could I chain? could you chain? could he chain? could we chain? could you chain? could they chain?
Forma com V-ing
could I be chaining? could you be chaining? could he be chaining? could we be chaining? could you be chaining? could they be chaining?
Perfeito
could I have chained? could you have chained? could he have chained? could we have chained? could you have chained? could they have chained?
Perfeito com V-ing
could I have been chaining? could you have been chaining? could he have been chaining? could we have been chaining? could you have been chaining? could they have been chaining?
Forma interro-Negação
Forma simple
could I not chain? could you not chain? could he not chain? could we not chain? could you not chain? could they not chain?
Forma com V-ing
could I not be chaining? could you not be chaining? could he not be chaining? could we not be chaining? could you not be chaining? could they not be chaining?
Perfeito
could I not have chained? could you not have chained? could he not have chained? could we not have chained? could you not have chained? could they not have chained?
Perfeito com V-ing
could I not have been chaining? could you not have been chaining? could he not have been chaining? could we not have been chaining? could you not have been chaining? could they not have been chaining?