I should file you should file he should file we should file you should file they should file
V-ing form
I should be filing you should be filing he should be filing we should be filing you should be filing they should be filing
Perfect
I should have filed you should have filed he should have filed we should have filed you should have filed they should have filed
V-ing perfect
I should have been filing you should have been filing he should have been filing we should have been filing you should have been filing they should have been filing
Negation
Simple form
I should not file you should not file he should not file we should not file you should not file they should not file
V-ing form
I should not be filing you should not be filing he should not be filing we should not be filing you should not be filing they should not be filing
Perfect
I should not have filed you should not have filed he should not have filed we should not have filed you should not have filed they should not have filed
V-ing perfect
I should not have been filing you should not have been filing he should not have been filing we should not have been filing you should not have been filing they should not have been filing
Interrogative form
Simple form
should I file? should you file? should he file? should we file? should you file? should they file?
V-ing form
should I be filing? should you be filing? should he be filing? should we be filing? should you be filing? should they be filing?
Perfect
should I have filed? should you have filed? should he have filed? should we have filed? should you have filed? should they have filed?
V-ing perfect
should I have been filing? should you have been filing? should he have been filing? should we have been filing? should you have been filing? should they have been filing?
Interro-negative form
Simple form
should I not file? should you not file? should he not file? should we not file? should you not file? should they not file?
V-ing form
should I not be filing? should you not be filing? should he not be filing? should we not be filing? should you not be filing? should they not be filing?
Perfect
should I not have filed? should you not have filed? should he not have filed? should we not have filed? should you not have filed? should they not have filed?
V-ing perfect
should I not have been filing? should you not have been filing? should he not have been filing? should we not have been filing? should you not have been filing? should they not have been filing?