ought to curb
Regular verb: curb - curbed- curbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to curb
you ought to curb
he ought to curb
we ought to curb
you ought to curb
they ought to curb 	I ought to be curbing
you ought to be curbing
he ought to be curbing
we ought to be curbing
you ought to be curbing
they ought to be curbing	I ought to have curbed
you ought to have curbed
he ought to have curbed
we ought to have curbed
you ought to have curbed
they ought to have curbed	I ought to have been curbing
you ought to have been curbing
he ought to have been curbing
we ought to have been curbing
you ought to have been curbing
they ought to have been curbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to curb
you oughtn't to curb
he oughtn't to curb
we oughtn't to curb
you oughtn't to curb
they oughtn't to curb 	I oughtn't to be curbing
you oughtn't to be curbing
he oughtn't to be curbing
we oughtn't to be curbing
you oughtn't to be curbing
they oughtn't to be curbing	I oughtn't to have curbed
you oughtn't to have curbed
he oughtn't to have curbed
we oughtn't to have curbed
you oughtn't to have curbed
they oughtn't to have curbed	I oughtn't to have been curbing
you oughtn't to have been curbing
he oughtn't to have been curbing
we oughtn't to have been curbing
you oughtn't to have been curbing
they oughtn't to have been curbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I curb?
ought to you curb?
ought to he curb?
ought to we curb?
ought to you curb?
ought to they curb? 	ought to I be curbing?
ought to you be curbing?
ought to he be curbing?
ought to we be curbing?
ought to you be curbing?
ought to they be curbing? 	ought to I have curbed?
ought to you have curbed?
ought to he have curbed?
ought to we have curbed?
ought to you have curbed?
ought to they have curbed? 	ought to I have been curbing?
ought to you have been curbing?
ought to he have been curbing?
ought to we have been curbing?
ought to you have been curbing?
ought to they have been curbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to curb?
oughtn't you to curb?
oughtn't he to curb?
oughtn't we to curb?
oughtn't you to curb?
oughtn't they to curb? 	oughtn't I to be curbing?
oughtn't you to be curbing?
oughtn't he to be curbing?
oughtn't we to be curbing?
oughtn't you to be curbing?
oughtn't they to be curbing? 	oughtn't I to have curbed?
oughtn't you to have curbed?
oughtn't he to have curbed?
oughtn't we to have curbed?
oughtn't you to have curbed?
oughtn't they to have curbed? 	oughtn't I to have been curbing?
oughtn't you to have been curbing?
oughtn't he to have been curbing?
oughtn't we to have been curbing?
oughtn't you to have been curbing?
oughtn't they to have been curbing?