shall double-book
Regular verb: double-book - double-booked- double-booked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll double-book
you'll double-book
she'll double-book
we'll double-book
you'll double-book
they'll double-book 	I'll be double-booking
you'll be double-booking
she'll be double-booking
we'll be double-booking
you'll be double-booking
they'll be double-booking	I'll have double-booked
you'll have double-booked
she'll have double-booked
we'll have double-booked
you'll have double-booked
they'll have double-booked	I'll have been double-booking
you'll have been double-booking
she'll have been double-booking
we'll have been double-booking
you'll have been double-booking
they'll have been double-booking	

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

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

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