English verb conjugation
MUST PREINVITE

Regular verb: preinvite - preinvited - preinvited

Affirmation

Simple form	V-ing form
I must preinvite you must preinvite he must preinvite we must preinvite you must preinvite they must preinvite	I must be preinviting you must be preinviting he must be preinviting we must be preinviting you must be preinviting they must be preinviting
Perfect	V-ing perfect
I must have preinvited you must have preinvited he must have preinvited we must have preinvited you must have preinvited they must have preinvited	I must have been preinviting you must have been preinviting he must have been preinviting we must have been preinviting you must have been preinviting they must have been preinviting

Negation

Simple form	V-ing form
I mustn't preinvite you mustn't preinvite he mustn't preinvite we mustn't preinvite you mustn't preinvite they mustn't preinvite	I mustn't be preinviting you mustn't be preinviting he mustn't be preinviting we mustn't be preinviting you mustn't be preinviting they mustn't be preinviting
Perfect	V-ing perfect
I mustn't have preinvited you mustn't have preinvited he mustn't have preinvited we mustn't have preinvited you mustn't have preinvited they mustn't have preinvited	I mustn't have been preinviting you mustn't have been preinviting he mustn't have been preinviting we mustn't have been preinviting you mustn't have been preinviting they mustn't have been preinviting

Interrogative form

Simple form	V-ing form
must I preinvite? must you preinvite? must he preinvite? must we preinvite? must you preinvite? must they preinvite?	must I be preinviting? must you be preinviting? must he be preinviting? must we be preinviting? must you be preinviting? must they be preinviting?
Perfect	V-ing perfect
must I have preinvited? must you have preinvited? must he have preinvited? must we have preinvited? must you have preinvited? must they have preinvited?	must I have been preinviting? must you have been preinviting? must he have been preinviting? must we have been preinviting? must you have been preinviting? must they have been preinviting?

Interro-negative form

Simple form	V-ing form
mustn't I preinvite? mustn't you preinvite? mustn't he preinvite? mustn't we preinvite? mustn't you preinvite? mustn't they preinvite?	mustn't I be preinviting? mustn't you be preinviting? mustn't he be preinviting? mustn't we be preinviting? mustn't you be preinviting? mustn't they be preinviting?
Perfect	V-ing perfect
mustn't I have preinvited? mustn't you have preinvited? mustn't he have preinvited? mustn't we have preinvited? mustn't you have preinvited? mustn't they have preinvited?	mustn't I have been preinviting? mustn't you have been preinviting? mustn't he have been preinviting? mustn't we have been preinviting? mustn't you have been preinviting? mustn't they have been preinviting?