ought to double-book
Regular verb: double-book - double-booked- double-booked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to double-book
you ought to double-book
he ought to double-book
we ought to double-book
you ought to double-book
they ought to double-book 	I ought to be double-booking
you ought to be double-booking
he ought to be double-booking
we ought to be double-booking
you ought to be double-booking
they ought to be double-booking	I ought to have double-booked
you ought to have double-booked
he ought to have double-booked
we ought to have double-booked
you ought to have double-booked
they ought to have double-booked	I ought to have been double-booking
you ought to have been double-booking
he ought to have been double-booking
we ought to have been double-booking
you ought to have been double-booking
they ought to have been double-booking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to double-book
you oughtn't to double-book
he oughtn't to double-book
we oughtn't to double-book
you oughtn't to double-book
they oughtn't to double-book 	I oughtn't to be double-booking
you oughtn't to be double-booking
he oughtn't to be double-booking
we oughtn't to be double-booking
you oughtn't to be double-booking
they oughtn't to be double-booking	I oughtn't to have double-booked
you oughtn't to have double-booked
he oughtn't to have double-booked
we oughtn't to have double-booked
you oughtn't to have double-booked
they oughtn't to have double-booked	I oughtn't to have been double-booking
you oughtn't to have been double-booking
he oughtn't to have been double-booking
we oughtn't to have been double-booking
you oughtn't to have been double-booking
they oughtn't to have been double-booking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I double-book?
ought to you double-book?
ought to he double-book?
ought to we double-book?
ought to you double-book?
ought to they double-book? 	ought to I be double-booking?
ought to you be double-booking?
ought to he be double-booking?
ought to we be double-booking?
ought to you be double-booking?
ought to they be double-booking? 	ought to I have double-booked?
ought to you have double-booked?
ought to he have double-booked?
ought to we have double-booked?
ought to you have double-booked?
ought to they have double-booked? 	ought to I have been double-booking?
ought to you have been double-booking?
ought to he have been double-booking?
ought to we have been double-booking?
ought to you have been double-booking?
ought to they have been double-booking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to double-book?
oughtn't you to double-book?
oughtn't he to double-book?
oughtn't we to double-book?
oughtn't you to double-book?
oughtn't they to double-book? 	oughtn't I to be double-booking?
oughtn't you to be double-booking?
oughtn't he to be double-booking?
oughtn't we to be double-booking?
oughtn't you to be double-booking?
oughtn't they to be double-booking? 	oughtn't I to have double-booked?
oughtn't you to have double-booked?
oughtn't he to have double-booked?
oughtn't we to have double-booked?
oughtn't you to have double-booked?
oughtn't they to have double-booked? 	oughtn't I to have been double-booking?
oughtn't you to have been double-booking?
oughtn't he to have been double-booking?
oughtn't we to have been double-booking?
oughtn't you to have been double-booking?
oughtn't they to have been double-booking?