could establish
Verbo regular: establish - established- established

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could establish
you could establish
she could establish
we could establish
you could establish
they could establish 	I could be establishing
you could be establishing
she could be establishing
we could be establishing
you could be establishing
they could be establishing	I could have established
you could have established
she could have established
we could have established
you could have established
they could have established	I could have been establishing
you could have been establishing
she could have been establishing
we could have been establishing
you could have been establishing
they could have been establishing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not establish
you could not establish
she could not establish
we could not establish
you could not establish
they could not establish 	I could not be establishing
you could not be establishing
she could not be establishing
we could not be establishing
you could not be establishing
they could not be establishing	I could not have established
you could not have established
she could not have established
we could not have established
you could not have established
they could not have established	I could not have been establishing
you could not have been establishing
she 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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I establish?
could you establish?
could she establish?
could we establish?
could you establish?
could they establish? 	could I be establishing?
could you be establishing?
could she be establishing?
could we be establishing?
could you be establishing?
could they be establishing? 	could I have established?
could you have established?
could she have established?
could we have established?
could you have established?
could they have established? 	could I have been establishing?
could you have been establishing?
could she have been establishing?
could we have been establishing?
could you have been establishing?
could they have been establishing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not establish?
could you not establish?
could she not establish?
could we not establish?
could you not establish?
could they not establish? 	could I not be establishing?
could you not be establishing?
could she not be establishing?
could we not be establishing?
could you not be establishing?
could they not be establishing? 	could I not have established?
could you not have established?
could she not have established?
could we not have established?
could you not have established?
could they not have established? 	could I not have been establishing?
could you not have been establishing?
could she not have been establishing?
could we not have been establishing?
could you not have been establishing?
could they not have been establishing?