ought to yack
Regular verb: yack - yacked- yacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to yack
you ought to yack
he ought to yack
we ought to yack
you ought to yack
they ought to yack 	I ought to be yacking
you ought to be yacking
he ought to be yacking
we ought to be yacking
you ought to be yacking
they ought to be yacking	I ought to have yacked
you ought to have yacked
he ought to have yacked
we ought to have yacked
you ought to have yacked
they ought to have yacked	I ought to have been yacking
you ought to have been yacking
he ought to have been yacking
we ought to have been yacking
you ought to have been yacking
they ought to have been yacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to yack
you oughtn't to yack
he oughtn't to yack
we oughtn't to yack
you oughtn't to yack
they oughtn't to yack 	I oughtn't to be yacking
you oughtn't to be yacking
he oughtn't to be yacking
we oughtn't to be yacking
you oughtn't to be yacking
they oughtn't to be yacking	I oughtn't to have yacked
you oughtn't to have yacked
he oughtn't to have yacked
we oughtn't to have yacked
you oughtn't to have yacked
they oughtn't to have yacked	I oughtn't to have been yacking
you oughtn't to have been yacking
he oughtn't to have been yacking
we oughtn't to have been yacking
you oughtn't to have been yacking
they oughtn't to have been yacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I yack?
ought to you yack?
ought to he yack?
ought to we yack?
ought to you yack?
ought to they yack? 	ought to I be yacking?
ought to you be yacking?
ought to he be yacking?
ought to we be yacking?
ought to you be yacking?
ought to they be yacking? 	ought to I have yacked?
ought to you have yacked?
ought to he have yacked?
ought to we have yacked?
ought to you have yacked?
ought to they have yacked? 	ought to I have been yacking?
ought to you have been yacking?
ought to he have been yacking?
ought to we have been yacking?
ought to you have been yacking?
ought to they have been yacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to yack?
oughtn't you to yack?
oughtn't he to yack?
oughtn't we to yack?
oughtn't you to yack?
oughtn't they to yack? 	oughtn't I to be yacking?
oughtn't you to be yacking?
oughtn't he to be yacking?
oughtn't we to be yacking?
oughtn't you to be yacking?
oughtn't they to be yacking? 	oughtn't I to have yacked?
oughtn't you to have yacked?
oughtn't he to have yacked?
oughtn't we to have yacked?
oughtn't you to have yacked?
oughtn't they to have yacked? 	oughtn't I to have been yacking?
oughtn't you to have been yacking?
oughtn't he to have been yacking?
oughtn't we to have been yacking?
oughtn't you to have been yacking?
oughtn't they to have been yacking?