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
she 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
she 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
she 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
she 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 ought not to curb
you ought not to curb
she ought not to curb
we ought not to curb
you ought not to curb
they ought not to curb 	I ought not to curbing
you ought not to curbing
she ought not to curbing
we ought not to curbing
you ought not to curbing
they ought not to curbing	I ought not to have curbed
you ought not to have curbed
she ought not to have curbed
we ought not to have curbed
you ought not to have curbed
they ought not to have curbed	I ought not to have been curbing
you ought not to have been curbing
she ought not to have been curbing
we ought not to have been curbing
you ought not to have been curbing
they ought not 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 she 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 she 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 she 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 she 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 	
ought I not to curb?
ought you not to curb?
ought she not to curb?
ought we not to curb?
ought you not to curb?
ought they not to curb? 	ought I not to be curbing?
ought you not to be curbing?
ought she not to be curbing?
ought we not to be curbing?
ought you not to be curbing?
ought they not to be curbing? 	ought I not to have curbed?
ought you not to have curbed?
ought she not to have curbed?
ought we not to have curbed?
ought you not to have curbed?
ought they not to have curbed? 	ought I not to have been curbing?
ought you not to have been curbing?
ought she not to have been curbing?
ought we not to have been curbing?
ought you not to have been curbing?
ought they not to have been curbing?