ought to abstain
Regular verb: abstain - abstained- abstained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to abstain
you ought to abstain
she ought to abstain
we ought to abstain
you ought to abstain
they ought to abstain 	I ought to be abstaining
you ought to be abstaining
she ought to be abstaining
we ought to be abstaining
you ought to be abstaining
they ought to be abstaining	I ought to have abstained
you ought to have abstained
she ought to have abstained
we ought to have abstained
you ought to have abstained
they ought to have abstained	I ought to have been abstaining
you ought to have been abstaining
she ought to have been abstaining
we ought to have been abstaining
you ought to have been abstaining
they ought to have been abstaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to abstain
you oughtn't to abstain
she oughtn't to abstain
we oughtn't to abstain
you oughtn't to abstain
they oughtn't to abstain 	I oughtn't to be abstaining
you oughtn't to be abstaining
she oughtn't to be abstaining
we oughtn't to be abstaining
you oughtn't to be abstaining
they oughtn't to be abstaining	I oughtn't to have abstained
you oughtn't to have abstained
she oughtn't to have abstained
we oughtn't to have abstained
you oughtn't to have abstained
they oughtn't to have abstained	I oughtn't to have been abstaining
you oughtn't to have been abstaining
she oughtn't to have been abstaining
we oughtn't to have been abstaining
you oughtn't to have been abstaining
they oughtn't to have been abstaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I abstain?
ought to you abstain?
ought to she abstain?
ought to we abstain?
ought to you abstain?
ought to they abstain? 	ought to I be abstaining?
ought to you be abstaining?
ought to she be abstaining?
ought to we be abstaining?
ought to you be abstaining?
ought to they be abstaining? 	ought to I have abstained?
ought to you have abstained?
ought to she have abstained?
ought to we have abstained?
ought to you have abstained?
ought to they have abstained? 	ought to I have been abstaining?
ought to you have been abstaining?
ought to she have been abstaining?
ought to we have been abstaining?
ought to you have been abstaining?
ought to they have been abstaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to abstain?
oughtn't you to abstain?
oughtn't she to abstain?
oughtn't we to abstain?
oughtn't you to abstain?
oughtn't they to abstain? 	oughtn't I to be abstaining?
oughtn't you to be abstaining?
oughtn't she to be abstaining?
oughtn't we to be abstaining?
oughtn't you to be abstaining?
oughtn't they to be abstaining? 	oughtn't I to have abstained?
oughtn't you to have abstained?
oughtn't she to have abstained?
oughtn't we to have abstained?
oughtn't you to have abstained?
oughtn't they to have abstained? 	oughtn't I to have been abstaining?
oughtn't you to have been abstaining?
oughtn't she to have been abstaining?
oughtn't we to have been abstaining?
oughtn't you to have been abstaining?
oughtn't they to have been abstaining?