ought to preexchange
Regular verb: preexchange - preexchanged- preexchanged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to preexchange
you ought to preexchange
he ought to preexchange
we ought to preexchange
you ought to preexchange
they ought to preexchange 	I ought to be preexchanging
you ought to be preexchanging
he ought to be preexchanging
we ought to be preexchanging
you ought to be preexchanging
they ought to be preexchanging	I ought to have preexchanged
you ought to have preexchanged
he ought to have preexchanged
we ought to have preexchanged
you ought to have preexchanged
they ought to have preexchanged	I ought to have been preexchanging
you ought to have been preexchanging
he ought to have been preexchanging
we ought to have been preexchanging
you ought to have been preexchanging
they ought to have been preexchanging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to preexchange
you oughtn't to preexchange
he oughtn't to preexchange
we oughtn't to preexchange
you oughtn't to preexchange
they oughtn't to preexchange 	I oughtn't to be preexchanging
you oughtn't to be preexchanging
he oughtn't to be preexchanging
we oughtn't to be preexchanging
you oughtn't to be preexchanging
they oughtn't to be preexchanging	I oughtn't to have preexchanged
you oughtn't to have preexchanged
he oughtn't to have preexchanged
we oughtn't to have preexchanged
you oughtn't to have preexchanged
they oughtn't to have preexchanged	I oughtn't to have been preexchanging
you oughtn't to have been preexchanging
he oughtn't to have been preexchanging
we oughtn't to have been preexchanging
you oughtn't to have been preexchanging
they oughtn't to have been preexchanging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I preexchange?
ought to you preexchange?
ought to he preexchange?
ought to we preexchange?
ought to you preexchange?
ought to they preexchange? 	ought to I be preexchanging?
ought to you be preexchanging?
ought to he be preexchanging?
ought to we be preexchanging?
ought to you be preexchanging?
ought to they be preexchanging? 	ought to I have preexchanged?
ought to you have preexchanged?
ought to he have preexchanged?
ought to we have preexchanged?
ought to you have preexchanged?
ought to they have preexchanged? 	ought to I have been preexchanging?
ought to you have been preexchanging?
ought to he have been preexchanging?
ought to we have been preexchanging?
ought to you have been preexchanging?
ought to they have been preexchanging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to preexchange?
oughtn't you to preexchange?
oughtn't he to preexchange?
oughtn't we to preexchange?
oughtn't you to preexchange?
oughtn't they to preexchange? 	oughtn't I to be preexchanging?
oughtn't you to be preexchanging?
oughtn't he to be preexchanging?
oughtn't we to be preexchanging?
oughtn't you to be preexchanging?
oughtn't they to be preexchanging? 	oughtn't I to have preexchanged?
oughtn't you to have preexchanged?
oughtn't he to have preexchanged?
oughtn't we to have preexchanged?
oughtn't you to have preexchanged?
oughtn't they to have preexchanged? 	oughtn't I to have been preexchanging?
oughtn't you to have been preexchanging?
oughtn't he to have been preexchanging?
oughtn't we to have been preexchanging?
oughtn't you to have been preexchanging?
oughtn't they to have been preexchanging?