should cause
Regular verb: cause - caused- caused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd cause
you'd cause
she'd cause
we'd cause
you'd cause
they'd cause 	I'd be causing
you'd be causing
she'd be causing
we'd be causing
you'd be causing
they'd be causing	I should've caused
you should've caused
she 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
she 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 	Perfect 	V-ing perfect 	
I shouldn't cause
you shouldn't cause
she 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
she shouldn't be causing
we shouldn't be causing
you shouldn't be causing
they shouldn't be causing	I shouldn't have caused
you shouldn't have caused
she 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
she 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 	Perfect 	V-ing perfect 	
should I cause?
should you cause?
should she cause?
should we cause?
should you cause?
should they cause? 	should I be causing?
should you be causing?
should she be causing?
should we be causing?
should you be causing?
should they be causing? 	should I have caused?
should you have caused?
should she 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 she 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 	Perfect 	V-ing perfect 	
shouldn't I cause?
shouldn't you cause?
shouldn't she 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 she be causing?
shouldn't we be causing?
shouldn't you be causing?
shouldn't they be causing? 	shouldn't I have caused?
shouldn't you have caused?
shouldn't she 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 she have been causing?
shouldn't we have been causing?
shouldn't you have been causing?
shouldn't they have been causing?