I'd be litigating you'd be litigating he'd be litigating we'd be litigating you'd be litigating they'd be litigating
Perfect
I should've litigated you should've litigated he should've litigated we should've litigated you should've litigated they should've litigated
V-ing perfect
I should've been litigating you should've been litigating he should've been litigating we should've been litigating you should've been litigating they should've been litigating
Negation
Simple form
I shouldn't litigate you shouldn't litigate he shouldn't litigate we shouldn't litigate you shouldn't litigate they shouldn't litigate
V-ing form
I shouldn't be litigating you shouldn't be litigating he shouldn't be litigating we shouldn't be litigating you shouldn't be litigating they shouldn't be litigating
Perfect
I shouldn't have litigated you shouldn't have litigated he shouldn't have litigated we shouldn't have litigated you shouldn't have litigated they shouldn't have litigated
V-ing perfect
I shouldn't have been litigating you shouldn't have been litigating he shouldn't have been litigating we shouldn't have been litigating you shouldn't have been litigating they shouldn't have been litigating
Interrogative form
Simple form
should I litigate? should you litigate? should he litigate? should we litigate? should you litigate? should they litigate?
V-ing form
should I be litigating? should you be litigating? should he be litigating? should we be litigating? should you be litigating? should they be litigating?
Perfect
should I have litigated? should you have litigated? should he have litigated? should we have litigated? should you have litigated? should they have litigated?
V-ing perfect
should I have been litigating? should you have been litigating? should he have been litigating? should we have been litigating? should you have been litigating? should they have been litigating?
Interro-negative form
Simple form
shouldn't I litigate? shouldn't you litigate? shouldn't he litigate? shouldn't we litigate? shouldn't you litigate? shouldn't they litigate?
V-ing form
shouldn't I be litigating? shouldn't you be litigating? shouldn't he be litigating? shouldn't we be litigating? shouldn't you be litigating? shouldn't they be litigating?
Perfect
shouldn't I have litigated? shouldn't you have litigated? shouldn't he have litigated? shouldn't we have litigated? shouldn't you have litigated? shouldn't they have litigated?
V-ing perfect
shouldn't I have been litigating? shouldn't you have been litigating? shouldn't he have been litigating? shouldn't we have been litigating? shouldn't you have been litigating? shouldn't they have been litigating?