Verbo regular: establish - established - established
Afirmación
Forma simple
I could establish you could establish he could establish we could establish you could establish they could establish
Forma con V-ing
I could be establishing you could be establishing he could be establishing we could be establishing you could be establishing they could be establishing
Perfecto
I could have established you could have established he could have established we could have established you could have established they could have established
Perfecto con V-ing
I could have been establishing you could have been establishing he could have been establishing we could have been establishing you could have been establishing they could have been establishing
Negación
Forma simple
I could not establish you could not establish he could not establish we could not establish you could not establish they could not establish
Forma con V-ing
I could not be establishing you could not be establishing he could not be establishing we could not be establishing you could not be establishing they could not be establishing
Perfecto
I could not have established you could not have established he could not have established we could not have established you could not have established they could not have established
Perfecto con V-ing
I could not have been establishing you could not have been establishing he could not have been establishing we could not have been establishing you could not have been establishing they could not have been establishing
Forma interrogativa
Forma simple
could I establish? could you establish? could he establish? could we establish? could you establish? could they establish?
Forma con V-ing
could I be establishing? could you be establishing? could he be establishing? could we be establishing? could you be establishing? could they be establishing?
Perfecto
could I have established? could you have established? could he have established? could we have established? could you have established? could they have established?
Perfecto con V-ing
could I have been establishing? could you have been establishing? could he have been establishing? could we have been establishing? could you have been establishing? could they have been establishing?
Forma interro-negativa
Forma simple
could I not establish? could you not establish? could he not establish? could we not establish? could you not establish? could they not establish?
Forma con V-ing
could I not be establishing? could you not be establishing? could he not be establishing? could we not be establishing? could you not be establishing? could they not be establishing?
Perfecto
could I not have established? could you not have established? could he not have established? could we not have established? could you not have established? could they not have established?
Perfecto con V-ing
could I not have been establishing? could you not have been establishing? could he not have been establishing? could we not have been establishing? could you not have been establishing? could they not have been establishing?