could discuss
Verbo regular: discuss - discussed- discussed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could discuss
you could discuss
he could discuss
we could discuss
you could discuss
they could discuss 	I could be discussing
you could be discussing
he could be discussing
we could be discussing
you could be discussing
they could be discussing	I could have discussed
you could have discussed
he could have discussed
we could have discussed
you could have discussed
they could have discussed	I could have been discussing
you could have been discussing
he could have been discussing
we could have been discussing
you could have been discussing
they could have been discussing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not discuss
you could not discuss
he could not discuss
we could not discuss
you could not discuss
they could not discuss 	I could not be discussing
you could not be discussing
he could not be discussing
we could not be discussing
you could not be discussing
they could not be discussing	I could not have discussed
you could not have discussed
he could not have discussed
we could not have discussed
you could not have discussed
they could not have discussed	I could not have been discussing
you could not have been discussing
he could not have been discussing
we could not have been discussing
you could not have been discussing
they could not have been discussing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I discuss?
could you discuss?
could he discuss?
could we discuss?
could you discuss?
could they discuss? 	could I be discussing?
could you be discussing?
could he be discussing?
could we be discussing?
could you be discussing?
could they be discussing? 	could I have discussed?
could you have discussed?
could he have discussed?
could we have discussed?
could you have discussed?
could they have discussed? 	could I have been discussing?
could you have been discussing?
could he have been discussing?
could we have been discussing?
could you have been discussing?
could they have been discussing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not discuss?
could you not discuss?
could he not discuss?
could we not discuss?
could you not discuss?
could they not discuss? 	could I not be discussing?
could you not be discussing?
could he not be discussing?
could we not be discussing?
could you not be discussing?
could they not be discussing? 	could I not have discussed?
could you not have discussed?
could he not have discussed?
could we not have discussed?
could you not have discussed?
could they not have discussed? 	could I not have been discussing?
could you not have been discussing?
could he not have been discussing?
could we not have been discussing?
could you not have been discussing?
could they not have been discussing?