ought to rob
Regular verb: rob - robbed- robbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to rob
you ought to rob
she ought to rob
we ought to rob
you ought to rob
they ought to rob 	I ought to be robbing
you ought to be robbing
she ought to be robbing
we ought to be robbing
you ought to be robbing
they ought to be robbing	I ought to have robbed
you ought to have robbed
she ought to have robbed
we ought to have robbed
you ought to have robbed
they ought to have robbed	I ought to have been robbing
you ought to have been robbing
she ought to have been robbing
we ought to have been robbing
you ought to have been robbing
they ought to have been robbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to rob
you oughtn't to rob
she oughtn't to rob
we oughtn't to rob
you oughtn't to rob
they oughtn't to rob 	I oughtn't to be robbing
you oughtn't to be robbing
she oughtn't to be robbing
we oughtn't to be robbing
you oughtn't to be robbing
they oughtn't to be robbing	I oughtn't to have robbed
you oughtn't to have robbed
she oughtn't to have robbed
we oughtn't to have robbed
you oughtn't to have robbed
they oughtn't to have robbed	I oughtn't to have been robbing
you oughtn't to have been robbing
she oughtn't to have been robbing
we oughtn't to have been robbing
you oughtn't to have been robbing
they oughtn't to have been robbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I rob?
ought to you rob?
ought to she rob?
ought to we rob?
ought to you rob?
ought to they rob? 	ought to I be robbing?
ought to you be robbing?
ought to she be robbing?
ought to we be robbing?
ought to you be robbing?
ought to they be robbing? 	ought to I have robbed?
ought to you have robbed?
ought to she have robbed?
ought to we have robbed?
ought to you have robbed?
ought to they have robbed? 	ought to I have been robbing?
ought to you have been robbing?
ought to she have been robbing?
ought to we have been robbing?
ought to you have been robbing?
ought to they have been robbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to rob?
oughtn't you to rob?
oughtn't she to rob?
oughtn't we to rob?
oughtn't you to rob?
oughtn't they to rob? 	oughtn't I to be robbing?
oughtn't you to be robbing?
oughtn't she to be robbing?
oughtn't we to be robbing?
oughtn't you to be robbing?
oughtn't they to be robbing? 	oughtn't I to have robbed?
oughtn't you to have robbed?
oughtn't she to have robbed?
oughtn't we to have robbed?
oughtn't you to have robbed?
oughtn't they to have robbed? 	oughtn't I to have been robbing?
oughtn't you to have been robbing?
oughtn't she to have been robbing?
oughtn't we to have been robbing?
oughtn't you to have been robbing?
oughtn't they to have been robbing?