English verb conjugation
MUST PREBOOK

Regular verb: prebook - prebooked - prebooked

Affirmation

Simple form	V-ing form
I must prebook you must prebook he must prebook we must prebook you must prebook they must prebook	I must be prebooking you must be prebooking he must be prebooking we must be prebooking you must be prebooking they must be prebooking
Perfect	V-ing perfect
I must have prebooked you must have prebooked he must have prebooked we must have prebooked you must have prebooked they must have prebooked	I must have been prebooking you must have been prebooking he must have been prebooking we must have been prebooking you must have been prebooking they must have been prebooking

Negation

Simple form	V-ing form
I mustn't prebook you mustn't prebook he mustn't prebook we mustn't prebook you mustn't prebook they mustn't prebook	I mustn't be prebooking you mustn't be prebooking he mustn't be prebooking we mustn't be prebooking you mustn't be prebooking they mustn't be prebooking
Perfect	V-ing perfect
I mustn't have prebooked you mustn't have prebooked he mustn't have prebooked we mustn't have prebooked you mustn't have prebooked they mustn't have prebooked	I mustn't have been prebooking you mustn't have been prebooking he mustn't have been prebooking we mustn't have been prebooking you mustn't have been prebooking they mustn't have been prebooking

Interrogative form

Simple form	V-ing form
must I prebook? must you prebook? must he prebook? must we prebook? must you prebook? must they prebook?	must I be prebooking? must you be prebooking? must he be prebooking? must we be prebooking? must you be prebooking? must they be prebooking?
Perfect	V-ing perfect
must I have prebooked? must you have prebooked? must he have prebooked? must we have prebooked? must you have prebooked? must they have prebooked?	must I have been prebooking? must you have been prebooking? must he have been prebooking? must we have been prebooking? must you have been prebooking? must they have been prebooking?

Interro-negative form

Simple form	V-ing form
mustn't I prebook? mustn't you prebook? mustn't he prebook? mustn't we prebook? mustn't you prebook? mustn't they prebook?	mustn't I be prebooking? mustn't you be prebooking? mustn't he be prebooking? mustn't we be prebooking? mustn't you be prebooking? mustn't they be prebooking?
Perfect	V-ing perfect
mustn't I have prebooked? mustn't you have prebooked? mustn't he have prebooked? mustn't we have prebooked? mustn't you have prebooked? mustn't they have prebooked?	mustn't I have been prebooking? mustn't you have been prebooking? mustn't he have been prebooking? mustn't we have been prebooking? mustn't you have been prebooking? mustn't they have been prebooking?