must prefurnish
Verbo regular: prefurnish - prefurnished- prefurnished

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must prefurnish
you must prefurnish
he must prefurnish
we must prefurnish
you must prefurnish
they must prefurnish 	I must be prefurnishing
you must be prefurnishing
he must be prefurnishing
we must be prefurnishing
you must be prefurnishing
they must be prefurnishing	I must have prefurnished
you must have prefurnished
he must have prefurnished
we must have prefurnished
you must have prefurnished
they must have prefurnished	I must have been prefurnishing
you must have been prefurnishing
he must have been prefurnishing
we must have been prefurnishing
you must have been prefurnishing
they must have been prefurnishing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't prefurnish
you mustn't prefurnish
he mustn't prefurnish
we mustn't prefurnish
you mustn't prefurnish
they mustn't prefurnish 	I mustn't be prefurnishing
you mustn't be prefurnishing
he mustn't be prefurnishing
we mustn't be prefurnishing
you mustn't be prefurnishing
they mustn't be prefurnishing	I mustn't have prefurnished
you mustn't have prefurnished
he mustn't have prefurnished
we mustn't have prefurnished
you mustn't have prefurnished
they mustn't have prefurnished	I mustn't have been prefurnishing
you mustn't have been prefurnishing
he mustn't have been prefurnishing
we mustn't have been prefurnishing
you mustn't have been prefurnishing
they mustn't have been prefurnishing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I prefurnish?
must you prefurnish?
must he prefurnish?
must we prefurnish?
must you prefurnish?
must they prefurnish? 	must I be prefurnishing?
must you be prefurnishing?
must he be prefurnishing?
must we be prefurnishing?
must you be prefurnishing?
must they be prefurnishing? 	must I have prefurnished?
must you have prefurnished?
must he have prefurnished?
must we have prefurnished?
must you have prefurnished?
must they have prefurnished? 	must I have been prefurnishing?
must you have been prefurnishing?
must he have been prefurnishing?
must we have been prefurnishing?
must you have been prefurnishing?
must they have been prefurnishing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I prefurnish?
mustn't you prefurnish?
mustn't he prefurnish?
mustn't we prefurnish?
mustn't you prefurnish?
mustn't they prefurnish? 	mustn't I be prefurnishing?
mustn't you be prefurnishing?
mustn't he be prefurnishing?
mustn't we be prefurnishing?
mustn't you be prefurnishing?
mustn't they be prefurnishing? 	mustn't I have prefurnished?
mustn't you have prefurnished?
mustn't he have prefurnished?
mustn't we have prefurnished?
mustn't you have prefurnished?
mustn't they have prefurnished? 	mustn't I have been prefurnishing?
mustn't you have been prefurnishing?
mustn't he have been prefurnishing?
mustn't we have been prefurnishing?
mustn't you have been prefurnishing?
mustn't they have been prefurnishing?