ought to preapprove
Regular verb: preapprove - preapproved- preapproved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to preapprove
you ought to preapprove
she ought to preapprove
we ought to preapprove
you ought to preapprove
they ought to preapprove 	I ought to be preapproving
you ought to be preapproving
she ought to be preapproving
we ought to be preapproving
you ought to be preapproving
they ought to be preapproving	I ought to have preapproved
you ought to have preapproved
she ought to have preapproved
we ought to have preapproved
you ought to have preapproved
they ought to have preapproved	I ought to have been preapproving
you ought to have been preapproving
she ought to have been preapproving
we ought to have been preapproving
you ought to have been preapproving
they ought to have been preapproving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to preapprove
you oughtn't to preapprove
she oughtn't to preapprove
we oughtn't to preapprove
you oughtn't to preapprove
they oughtn't to preapprove 	I oughtn't to be preapproving
you oughtn't to be preapproving
she oughtn't to be preapproving
we oughtn't to be preapproving
you oughtn't to be preapproving
they oughtn't to be preapproving	I oughtn't to have preapproved
you oughtn't to have preapproved
she oughtn't to have preapproved
we oughtn't to have preapproved
you oughtn't to have preapproved
they oughtn't to have preapproved	I oughtn't to have been preapproving
you oughtn't to have been preapproving
she oughtn't to have been preapproving
we oughtn't to have been preapproving
you oughtn't to have been preapproving
they oughtn't to have been preapproving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I preapprove?
ought to you preapprove?
ought to she preapprove?
ought to we preapprove?
ought to you preapprove?
ought to they preapprove? 	ought to I be preapproving?
ought to you be preapproving?
ought to she be preapproving?
ought to we be preapproving?
ought to you be preapproving?
ought to they be preapproving? 	ought to I have preapproved?
ought to you have preapproved?
ought to she have preapproved?
ought to we have preapproved?
ought to you have preapproved?
ought to they have preapproved? 	ought to I have been preapproving?
ought to you have been preapproving?
ought to she have been preapproving?
ought to we have been preapproving?
ought to you have been preapproving?
ought to they have been preapproving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to preapprove?
oughtn't you to preapprove?
oughtn't she to preapprove?
oughtn't we to preapprove?
oughtn't you to preapprove?
oughtn't they to preapprove? 	oughtn't I to be preapproving?
oughtn't you to be preapproving?
oughtn't she to be preapproving?
oughtn't we to be preapproving?
oughtn't you to be preapproving?
oughtn't they to be preapproving? 	oughtn't I to have preapproved?
oughtn't you to have preapproved?
oughtn't she to have preapproved?
oughtn't we to have preapproved?
oughtn't you to have preapproved?
oughtn't they to have preapproved? 	oughtn't I to have been preapproving?
oughtn't you to have been preapproving?
oughtn't she to have been preapproving?
oughtn't we to have been preapproving?
oughtn't you to have been preapproving?
oughtn't they to have been preapproving?