must prefurnish
Regular verb: prefurnish - prefurnished- prefurnished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not prefurnish
you must not prefurnish
he must not prefurnish
we must not prefurnish
you must not prefurnish
they must not prefurnish 	I must not be prefurnishing
you must not be prefurnishing
he must not be prefurnishing
we must not be prefurnishing
you must not be prefurnishing
they must not be prefurnishing	I must not have prefurnished
you must not have prefurnished
he must not have prefurnished
we must not have prefurnished
you must not have prefurnished
they must not have prefurnished	I must not have been prefurnishing
you must not have been prefurnishing
he must not have been prefurnishing
we must not have been prefurnishing
you must not have been prefurnishing
they must not have been prefurnishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not prefurnish?
must you not prefurnish?
must he not prefurnish?
must we not prefurnish?
must you not prefurnish?
must they not prefurnish? 	must I not be prefurnishing?
must you not be prefurnishing?
must he not be prefurnishing?
must we not be prefurnishing?
must you not be prefurnishing?
must they not be prefurnishing? 	must I not have prefurnished?
must you not have prefurnished?
must he not have prefurnished?
must we not have prefurnished?
must you not have prefurnished?
must they not have prefurnished? 	must I not have been prefurnishing?
must you not have been prefurnishing?
must he not have been prefurnishing?
must we not have been prefurnishing?
must you not have been prefurnishing?
must they not have been prefurnishing?