ought to sue
Regular verb: sue - sued- sued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sue
you ought to sue
she ought to sue
we ought to sue
you ought to sue
they ought to sue 	I ought to be suing
you ought to be suing
she ought to be suing
we ought to be suing
you ought to be suing
they ought to be suing	I ought to have sued
you ought to have sued
she ought to have sued
we ought to have sued
you ought to have sued
they ought to have sued	I ought to have been suing
you ought to have been suing
she ought to have been suing
we ought to have been suing
you ought to have been suing
they ought to have been suing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to sue
you ought not to sue
she ought not to sue
we ought not to sue
you ought not to sue
they ought not to sue 	I ought not to suing
you ought not to suing
she ought not to suing
we ought not to suing
you ought not to suing
they ought not to suing	I ought not to have sued
you ought not to have sued
she ought not to have sued
we ought not to have sued
you ought not to have sued
they ought not to have sued	I ought not to have been suing
you ought not to have been suing
she ought not to have been suing
we ought not to have been suing
you ought not to have been suing
they ought not to have been suing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sue?
ought to you sue?
ought to she sue?
ought to we sue?
ought to you sue?
ought to they sue? 	ought to I be suing?
ought to you be suing?
ought to she be suing?
ought to we be suing?
ought to you be suing?
ought to they be suing? 	ought to I have sued?
ought to you have sued?
ought to she have sued?
ought to we have sued?
ought to you have sued?
ought to they have sued? 	ought to I have been suing?
ought to you have been suing?
ought to she have been suing?
ought to we have been suing?
ought to you have been suing?
ought to they have been suing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to sue?
ought you not to sue?
ought she not to sue?
ought we not to sue?
ought you not to sue?
ought they not to sue? 	ought I not to be suing?
ought you not to be suing?
ought she not to be suing?
ought we not to be suing?
ought you not to be suing?
ought they not to be suing? 	ought I not to have sued?
ought you not to have sued?
ought she not to have sued?
ought we not to have sued?
ought you not to have sued?
ought they not to have sued? 	ought I not to have been suing?
ought you not to have been suing?
ought she not to have been suing?
ought we not to have been suing?
ought you not to have been suing?
ought they not to have been suing?