could discard
Verbo regular: discard - discarded- discarded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could discard
you could discard
she could discard
we could discard
you could discard
they could discard 	I could be discarding
you could be discarding
she could be discarding
we could be discarding
you could be discarding
they could be discarding	I could have discarded
you could have discarded
she 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
she could have been discarding
we could have been discarding
you could have been discarding
they could have been discarding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't discard
you couldn't discard
she 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
she 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
she 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
she 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 com V-ing 	Perfeito 	Perfeito com V-ing 	
could I discard?
could you discard?
could she discard?
could we discard?
could you discard?
could they discard? 	could I be discarding?
could you be discarding?
could she be discarding?
could we be discarding?
could you be discarding?
could they be discarding? 	could I have discarded?
could you have discarded?
could she 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 she have been discarding?
could we have been discarding?
could you have been discarding?
could they have been discarding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I discard?
couldn't you discard?
couldn't she 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 she 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 she 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 she have been discarding?
couldn't we have been discarding?
couldn't you have been discarding?
couldn't they have been discarding?