should sue
Regular verb: sue - sued- sued

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not sue
you should not sue
he should not sue
we should not sue
you should not sue
they should not sue 	I should not be suing
you should not be suing
he should not be suing
we should not be suing
you should not be suing
they should not be suing	I should not have sued
you should not have sued
he should not have sued
we should not have sued
you should not have sued
they should not have sued	I should not have been suing
you should not have been suing
he should not have been suing
we should not have been suing
you should not have been suing
they should not 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 	
should I not sue?
should you not sue?
should he not sue?
should we not sue?
should you not sue?
should they not sue? 	should I not be suing?
should you not be suing?
should he not be suing?
should we not be suing?
should you not be suing?
should they not be suing? 	should I not have sued?
should you not have sued?
should he not have sued?
should we not have sued?
should you not have sued?
should they not have sued? 	should I not have been suing?
should you not have been suing?
should he not have been suing?
should we not have been suing?
should you not have been suing?
should they not have been suing?