ought to overstudy
Regular verb: overstudy - overstudied- overstudied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to overstudy
you ought to overstudy
she ought to overstudy
we ought to overstudy
you ought to overstudy
they ought to overstudy 	I ought to be overstudying
you ought to be overstudying
she ought to be overstudying
we ought to be overstudying
you ought to be overstudying
they ought to be overstudying	I ought to have overstudied
you ought to have overstudied
she ought to have overstudied
we ought to have overstudied
you ought to have overstudied
they ought to have overstudied	I ought to have been overstudying
you ought to have been overstudying
she ought to have been overstudying
we ought to have been overstudying
you ought to have been overstudying
they ought to have been overstudying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to overstudy
you oughtn't to overstudy
she oughtn't to overstudy
we oughtn't to overstudy
you oughtn't to overstudy
they oughtn't to overstudy 	I oughtn't to be overstudying
you oughtn't to be overstudying
she oughtn't to be overstudying
we oughtn't to be overstudying
you oughtn't to be overstudying
they oughtn't to be overstudying	I oughtn't to have overstudied
you oughtn't to have overstudied
she oughtn't to have overstudied
we oughtn't to have overstudied
you oughtn't to have overstudied
they oughtn't to have overstudied	I oughtn't to have been overstudying
you oughtn't to have been overstudying
she oughtn't to have been overstudying
we oughtn't to have been overstudying
you oughtn't to have been overstudying
they oughtn't to have been overstudying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I overstudy?
ought to you overstudy?
ought to she overstudy?
ought to we overstudy?
ought to you overstudy?
ought to they overstudy? 	ought to I be overstudying?
ought to you be overstudying?
ought to she be overstudying?
ought to we be overstudying?
ought to you be overstudying?
ought to they be overstudying? 	ought to I have overstudied?
ought to you have overstudied?
ought to she have overstudied?
ought to we have overstudied?
ought to you have overstudied?
ought to they have overstudied? 	ought to I have been overstudying?
ought to you have been overstudying?
ought to she have been overstudying?
ought to we have been overstudying?
ought to you have been overstudying?
ought to they have been overstudying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to overstudy?
oughtn't you to overstudy?
oughtn't she to overstudy?
oughtn't we to overstudy?
oughtn't you to overstudy?
oughtn't they to overstudy? 	oughtn't I to be overstudying?
oughtn't you to be overstudying?
oughtn't she to be overstudying?
oughtn't we to be overstudying?
oughtn't you to be overstudying?
oughtn't they to be overstudying? 	oughtn't I to have overstudied?
oughtn't you to have overstudied?
oughtn't she to have overstudied?
oughtn't we to have overstudied?
oughtn't you to have overstudied?
oughtn't they to have overstudied? 	oughtn't I to have been overstudying?
oughtn't you to have been overstudying?
oughtn't she to have been overstudying?
oughtn't we to have been overstudying?
oughtn't you to have been overstudying?
oughtn't they to have been overstudying?