must preinvite
Regular verb: preinvite - preinvited- preinvited

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