English verb conjugation
MUST PREINSCRIBE

Regular verb: preinscribe - preinscribed - preinscribed

Affirmation

Simple form	V-ing form
I must preinscribe you must preinscribe he must preinscribe we must preinscribe you must preinscribe they must preinscribe	I must be preinscribing you must be preinscribing he must be preinscribing we must be preinscribing you must be preinscribing they must be preinscribing
Perfect	V-ing perfect
I must have preinscribed you must have preinscribed he must have preinscribed we must have preinscribed you must have preinscribed they must have preinscribed	I must have been preinscribing you must have been preinscribing he must have been preinscribing we must have been preinscribing you must have been preinscribing they must have been preinscribing

Negation

Simple form	V-ing form
I mustn't preinscribe you mustn't preinscribe he mustn't preinscribe we mustn't preinscribe you mustn't preinscribe they mustn't preinscribe	I mustn't be preinscribing you mustn't be preinscribing he mustn't be preinscribing we mustn't be preinscribing you mustn't be preinscribing they mustn't be preinscribing
Perfect	V-ing perfect
I mustn't have preinscribed you mustn't have preinscribed he mustn't have preinscribed we mustn't have preinscribed you mustn't have preinscribed they mustn't have preinscribed	I mustn't have been preinscribing you mustn't have been preinscribing he mustn't have been preinscribing we mustn't have been preinscribing you mustn't have been preinscribing they mustn't have been preinscribing

Interrogative form

Simple form	V-ing form
must I preinscribe? must you preinscribe? must he preinscribe? must we preinscribe? must you preinscribe? must they preinscribe?	must I be preinscribing? must you be preinscribing? must he be preinscribing? must we be preinscribing? must you be preinscribing? must they be preinscribing?
Perfect	V-ing perfect
must I have preinscribed? must you have preinscribed? must he have preinscribed? must we have preinscribed? must you have preinscribed? must they have preinscribed?	must I have been preinscribing? must you have been preinscribing? must he have been preinscribing? must we have been preinscribing? must you have been preinscribing? must they have been preinscribing?

Interro-negative form

Simple form	V-ing form
mustn't I preinscribe? mustn't you preinscribe? mustn't he preinscribe? mustn't we preinscribe? mustn't you preinscribe? mustn't they preinscribe?	mustn't I be preinscribing? mustn't you be preinscribing? mustn't he be preinscribing? mustn't we be preinscribing? mustn't you be preinscribing? mustn't they be preinscribing?
Perfect	V-ing perfect
mustn't I have preinscribed? mustn't you have preinscribed? mustn't he have preinscribed? mustn't we have preinscribed? mustn't you have preinscribed? mustn't they have preinscribed?	mustn't I have been preinscribing? mustn't you have been preinscribing? mustn't he have been preinscribing? mustn't we have been preinscribing? mustn't you have been preinscribing? mustn't they have been preinscribing?