ought to scratch
Regular verb: scratch - scratched- scratched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to scratch
you ought to scratch
she ought to scratch
we ought to scratch
you ought to scratch
they ought to scratch 	I ought to be scratching
you ought to be scratching
she ought to be scratching
we ought to be scratching
you ought to be scratching
they ought to be scratching	I ought to have scratched
you ought to have scratched
she ought to have scratched
we ought to have scratched
you ought to have scratched
they ought to have scratched	I ought to have been scratching
you ought to have been scratching
she ought to have been scratching
we ought to have been scratching
you ought to have been scratching
they ought to have been scratching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to scratch
you oughtn't to scratch
she oughtn't to scratch
we oughtn't to scratch
you oughtn't to scratch
they oughtn't to scratch 	I oughtn't to be scratching
you oughtn't to be scratching
she oughtn't to be scratching
we oughtn't to be scratching
you oughtn't to be scratching
they oughtn't to be scratching	I oughtn't to have scratched
you oughtn't to have scratched
she oughtn't to have scratched
we oughtn't to have scratched
you oughtn't to have scratched
they oughtn't to have scratched	I oughtn't to have been scratching
you oughtn't to have been scratching
she oughtn't to have been scratching
we oughtn't to have been scratching
you oughtn't to have been scratching
they oughtn't to have been scratching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I scratch?
ought to you scratch?
ought to she scratch?
ought to we scratch?
ought to you scratch?
ought to they scratch? 	ought to I be scratching?
ought to you be scratching?
ought to she be scratching?
ought to we be scratching?
ought to you be scratching?
ought to they be scratching? 	ought to I have scratched?
ought to you have scratched?
ought to she have scratched?
ought to we have scratched?
ought to you have scratched?
ought to they have scratched? 	ought to I have been scratching?
ought to you have been scratching?
ought to she have been scratching?
ought to we have been scratching?
ought to you have been scratching?
ought to they have been scratching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to scratch?
oughtn't you to scratch?
oughtn't she to scratch?
oughtn't we to scratch?
oughtn't you to scratch?
oughtn't they to scratch? 	oughtn't I to be scratching?
oughtn't you to be scratching?
oughtn't she to be scratching?
oughtn't we to be scratching?
oughtn't you to be scratching?
oughtn't they to be scratching? 	oughtn't I to have scratched?
oughtn't you to have scratched?
oughtn't she to have scratched?
oughtn't we to have scratched?
oughtn't you to have scratched?
oughtn't they to have scratched? 	oughtn't I to have been scratching?
oughtn't you to have been scratching?
oughtn't she to have been scratching?
oughtn't we to have been scratching?
oughtn't you to have been scratching?
oughtn't they to have been scratching?