English verb conjugation
SHOULD CAUSE

Regular verb: cause - caused - caused

Affirmation

Simple form	V-ing form
I'd cause you'd cause he'd cause we'd cause you'd cause they'd cause	I'd be causing you'd be causing he'd be causing we'd be causing you'd be causing they'd be causing
Perfect	V-ing perfect
I should've caused you should've caused he should've caused we should've caused you should've caused they should've caused	I should've been causing you should've been causing he should've been causing we should've been causing you should've been causing they should've been causing

Negation

Simple form	V-ing form
I shouldn't cause you shouldn't cause he shouldn't cause we shouldn't cause you shouldn't cause they shouldn't cause	I shouldn't be causing you shouldn't be causing he shouldn't be causing we shouldn't be causing you shouldn't be causing they shouldn't be causing
Perfect	V-ing perfect
I shouldn't have caused you shouldn't have caused he shouldn't have caused we shouldn't have caused you shouldn't have caused they shouldn't have caused	I shouldn't have been causing you shouldn't have been causing he shouldn't have been causing we shouldn't have been causing you shouldn't have been causing they shouldn't have been causing

Interrogative form

Simple form	V-ing form
should I cause? should you cause? should he cause? should we cause? should you cause? should they cause?	should I be causing? should you be causing? should he be causing? should we be causing? should you be causing? should they be causing?
Perfect	V-ing perfect
should I have caused? should you have caused? should he have caused? should we have caused? should you have caused? should they have caused?	should I have been causing? should you have been causing? should he have been causing? should we have been causing? should you have been causing? should they have been causing?

Interro-negative form

Simple form	V-ing form
shouldn't I cause? shouldn't you cause? shouldn't he cause? shouldn't we cause? shouldn't you cause? shouldn't they cause?	shouldn't I be causing? shouldn't you be causing? shouldn't he be causing? shouldn't we be causing? shouldn't you be causing? shouldn't they be causing?
Perfect	V-ing perfect
shouldn't I have caused? shouldn't you have caused? shouldn't he have caused? shouldn't we have caused? shouldn't you have caused? shouldn't they have caused?	shouldn't I have been causing? shouldn't you have been causing? shouldn't he have been causing? shouldn't we have been causing? shouldn't you have been causing? shouldn't they have been causing?