ought to thwack
Regular verb: thwack - thwacked- thwacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to thwack
you ought to thwack
he ought to thwack
we ought to thwack
you ought to thwack
they ought to thwack 	I ought to be thwacking
you ought to be thwacking
he ought to be thwacking
we ought to be thwacking
you ought to be thwacking
they ought to be thwacking	I ought to have thwacked
you ought to have thwacked
he ought to have thwacked
we ought to have thwacked
you ought to have thwacked
they ought to have thwacked	I ought to have been thwacking
you ought to have been thwacking
he ought to have been thwacking
we ought to have been thwacking
you ought to have been thwacking
they ought to have been thwacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to thwack
you oughtn't to thwack
he oughtn't to thwack
we oughtn't to thwack
you oughtn't to thwack
they oughtn't to thwack 	I oughtn't to be thwacking
you oughtn't to be thwacking
he oughtn't to be thwacking
we oughtn't to be thwacking
you oughtn't to be thwacking
they oughtn't to be thwacking	I oughtn't to have thwacked
you oughtn't to have thwacked
he oughtn't to have thwacked
we oughtn't to have thwacked
you oughtn't to have thwacked
they oughtn't to have thwacked	I oughtn't to have been thwacking
you oughtn't to have been thwacking
he oughtn't to have been thwacking
we oughtn't to have been thwacking
you oughtn't to have been thwacking
they oughtn't to have been thwacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I thwack?
ought to you thwack?
ought to he thwack?
ought to we thwack?
ought to you thwack?
ought to they thwack? 	ought to I be thwacking?
ought to you be thwacking?
ought to he be thwacking?
ought to we be thwacking?
ought to you be thwacking?
ought to they be thwacking? 	ought to I have thwacked?
ought to you have thwacked?
ought to he have thwacked?
ought to we have thwacked?
ought to you have thwacked?
ought to they have thwacked? 	ought to I have been thwacking?
ought to you have been thwacking?
ought to he have been thwacking?
ought to we have been thwacking?
ought to you have been thwacking?
ought to they have been thwacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to thwack?
oughtn't you to thwack?
oughtn't he to thwack?
oughtn't we to thwack?
oughtn't you to thwack?
oughtn't they to thwack? 	oughtn't I to be thwacking?
oughtn't you to be thwacking?
oughtn't he to be thwacking?
oughtn't we to be thwacking?
oughtn't you to be thwacking?
oughtn't they to be thwacking? 	oughtn't I to have thwacked?
oughtn't you to have thwacked?
oughtn't he to have thwacked?
oughtn't we to have thwacked?
oughtn't you to have thwacked?
oughtn't they to have thwacked? 	oughtn't I to have been thwacking?
oughtn't you to have been thwacking?
oughtn't he to have been thwacking?
oughtn't we to have been thwacking?
oughtn't you to have been thwacking?
oughtn't they to have been thwacking?