could discard
Regular verb: discard - discarded- discarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not discard
you could not discard
she could not discard
we could not discard
you could not discard
they could not discard 	I could not be discarding
you could not be discarding
she could not be discarding
we could not be discarding
you could not be discarding
they could not be discarding	I could not have discarded
you could not have discarded
she could not have discarded
we could not have discarded
you could not have discarded
they could not have discarded	I could not have been discarding
you could not have been discarding
she could not have been discarding
we could not have been discarding
you could not have been discarding
they could not have been discarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not discard?
could you not discard?
could she not discard?
could we not discard?
could you not discard?
could they not discard? 	could I not be discarding?
could you not be discarding?
could she not be discarding?
could we not be discarding?
could you not be discarding?
could they not be discarding? 	could I not have discarded?
could you not have discarded?
could she not have discarded?
could we not have discarded?
could you not have discarded?
could they not have discarded? 	could I not have been discarding?
could you not have been discarding?
could she not have been discarding?
could we not have been discarding?
could you not have been discarding?
could they not have been discarding?