should sue
Regular verb: sue - sued- sued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd sue
you'd sue
he'd sue
we'd sue
you'd sue
they'd sue 	I'd be suing
you'd be suing
he'd be suing
we'd be suing
you'd be suing
they'd be suing	I should've sued
you should've sued
he should've sued
we should've sued
you should've sued
they should've sued	I should've been suing
you should've been suing
he should've been suing
we should've been suing
you should've been suing
they should've been suing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't sue
you shouldn't sue
he shouldn't sue
we shouldn't sue
you shouldn't sue
they shouldn't sue 	I shouldn't be suing
you shouldn't be suing
he shouldn't be suing
we shouldn't be suing
you shouldn't be suing
they shouldn't be suing	I shouldn't have sued
you shouldn't have sued
he shouldn't have sued
we shouldn't have sued
you shouldn't have sued
they shouldn't have sued	I shouldn't have been suing
you shouldn't have been suing
he shouldn't have been suing
we shouldn't have been suing
you shouldn't have been suing
they shouldn't have been suing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I sue?
should you sue?
should he sue?
should we sue?
should you sue?
should they sue? 	should I be suing?
should you be suing?
should he be suing?
should we be suing?
should you be suing?
should they be suing? 	should I have sued?
should you have sued?
should he have sued?
should we have sued?
should you have sued?
should they have sued? 	should I have been suing?
should you have been suing?
should he have been suing?
should we have been suing?
should you have been suing?
should they have been suing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I sue?
shouldn't you sue?
shouldn't he sue?
shouldn't we sue?
shouldn't you sue?
shouldn't they sue? 	shouldn't I be suing?
shouldn't you be suing?
shouldn't he be suing?
shouldn't we be suing?
shouldn't you be suing?
shouldn't they be suing? 	shouldn't I have sued?
shouldn't you have sued?
shouldn't he have sued?
shouldn't we have sued?
shouldn't you have sued?
shouldn't they have sued? 	shouldn't I have been suing?
shouldn't you have been suing?
shouldn't he have been suing?
shouldn't we have been suing?
shouldn't you have been suing?
shouldn't they have been suing?