could discard
Verbo regular: discard - discarded- discarded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could discard
you could discard
he could discard
we could discard
you could discard
they could discard 	I could be discarding
you could be discarding
he could be discarding
we could be discarding
you could be discarding
they could be discarding	I could have discarded
you could have discarded
he could have discarded
we could have discarded
you could have discarded
they could have discarded	I could have been discarding
you could have been discarding
he could have been discarding
we could have been discarding
you could have been discarding
they could have been discarding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't discard
you couldn't discard
he couldn't discard
we couldn't discard
you couldn't discard
they couldn't discard 	I couldn't be discarding
you couldn't be discarding
he couldn't be discarding
we couldn't be discarding
you couldn't be discarding
they couldn't be discarding	I couldn't have discarded
you couldn't have discarded
he couldn't have discarded
we couldn't have discarded
you couldn't have discarded
they couldn't have discarded	I couldn't have been discarding
you couldn't have been discarding
he couldn't have been discarding
we couldn't have been discarding
you couldn't have been discarding
they couldn't have been discarding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I discard?
could you discard?
could he discard?
could we discard?
could you discard?
could they discard? 	could I be discarding?
could you be discarding?
could he be discarding?
could we be discarding?
could you be discarding?
could they be discarding? 	could I have discarded?
could you have discarded?
could he have discarded?
could we have discarded?
could you have discarded?
could they have discarded? 	could I have been discarding?
could you have been discarding?
could he have been discarding?
could we have been discarding?
could you have been discarding?
could they have been discarding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I discard?
couldn't you discard?
couldn't he discard?
couldn't we discard?
couldn't you discard?
couldn't they discard? 	couldn't I be discarding?
couldn't you be discarding?
couldn't he be discarding?
couldn't we be discarding?
couldn't you be discarding?
couldn't they be discarding? 	couldn't I have discarded?
couldn't you have discarded?
couldn't he have discarded?
couldn't we have discarded?
couldn't you have discarded?
couldn't they have discarded? 	couldn't I have been discarding?
couldn't you have been discarding?
couldn't he have been discarding?
couldn't we have been discarding?
couldn't you have been discarding?
couldn't they have been discarding?