should discard
Regular verb: discard - discarded- discarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should discard
you should discard
he should discard
we should discard
you should discard
they should discard 	I should be discarding
you should be discarding
he should be discarding
we should be discarding
you should be discarding
they should be discarding	I should have discarded
you should have discarded
he should have discarded
we should have discarded
you should have discarded
they should have discarded	I should have been discarding
you should have been discarding
he should have been discarding
we should have been discarding
you should have been discarding
they should have been discarding	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I discard?
should you discard?
should he discard?
should we discard?
should you discard?
should they discard? 	should I be discarding?
should you be discarding?
should he be discarding?
should we be discarding?
should you be discarding?
should they be discarding? 	should I have discarded?
should you have discarded?
should he have discarded?
should we have discarded?
should you have discarded?
should they have discarded? 	should I have been discarding?
should you have been discarding?
should he have been discarding?
should we have been discarding?
should you have been discarding?
should they have been discarding? 	

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