English verb conjugation
SHOULD BOOK

Regular verb: book - booked - booked

Affirmation

Simple form	V-ing form
I should book you should book he should book we should book you should book they should book	I should be booking you should be booking he should be booking we should be booking you should be booking they should be booking
Perfect	V-ing perfect
I should have booked you should have booked he should have booked we should have booked you should have booked they should have booked	I should have been booking you should have been booking he should have been booking we should have been booking you should have been booking they should have been booking

Negation

Simple form	V-ing form
I should not book you should not book he should not book we should not book you should not book they should not book	I should not be booking you should not be booking he should not be booking we should not be booking you should not be booking they should not be booking
Perfect	V-ing perfect
I should not have booked you should not have booked he should not have booked we should not have booked you should not have booked they should not have booked	I should not have been booking you should not have been booking he should not have been booking we should not have been booking you should not have been booking they should not have been booking

Interrogative form

Simple form	V-ing form
should I book? should you book? should he book? should we book? should you book? should they book?	should I be booking? should you be booking? should he be booking? should we be booking? should you be booking? should they be booking?
Perfect	V-ing perfect
should I have booked? should you have booked? should he have booked? should we have booked? should you have booked? should they have booked?	should I have been booking? should you have been booking? should he have been booking? should we have been booking? should you have been booking? should they have been booking?

Interro-negative form

Simple form	V-ing form
should I not book? should you not book? should he not book? should we not book? should you not book? should they not book?	should I not be booking? should you not be booking? should he not be booking? should we not be booking? should you not be booking? should they not be booking?
Perfect	V-ing perfect
should I not have booked? should you not have booked? should he not have booked? should we not have booked? should you not have booked? should they not have booked?	should I not have been booking? should you not have been booking? should he not have been booking? should we not have been booking? should you not have been booking? should they not have been booking?