must furnish
Regular verb: furnish - furnished- furnished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must furnish
you must furnish
she must furnish
we must furnish
you must furnish
they must furnish 	I must be furnishing
you must be furnishing
she must be furnishing
we must be furnishing
you must be furnishing
they must be furnishing	I must have furnished
you must have furnished
she must have furnished
we must have furnished
you must have furnished
they must have furnished	I must have been furnishing
you must have been furnishing
she must have been furnishing
we must have been furnishing
you must have been furnishing
they must have been furnishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't furnish
you mustn't furnish
she mustn't furnish
we mustn't furnish
you mustn't furnish
they mustn't furnish 	I mustn't be furnishing
you mustn't be furnishing
she mustn't be furnishing
we mustn't be furnishing
you mustn't be furnishing
they mustn't be furnishing	I mustn't have furnished
you mustn't have furnished
she mustn't have furnished
we mustn't have furnished
you mustn't have furnished
they mustn't have furnished	I mustn't have been furnishing
you mustn't have been furnishing
she mustn't have been furnishing
we mustn't have been furnishing
you mustn't have been furnishing
they mustn't have been furnishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I furnish?
must you furnish?
must she furnish?
must we furnish?
must you furnish?
must they furnish? 	must I be furnishing?
must you be furnishing?
must she be furnishing?
must we be furnishing?
must you be furnishing?
must they be furnishing? 	must I have furnished?
must you have furnished?
must she have furnished?
must we have furnished?
must you have furnished?
must they have furnished? 	must I have been furnishing?
must you have been furnishing?
must she have been furnishing?
must we have been furnishing?
must you have been furnishing?
must they have been furnishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I furnish?
mustn't you furnish?
mustn't she furnish?
mustn't we furnish?
mustn't you furnish?
mustn't they furnish? 	mustn't I be furnishing?
mustn't you be furnishing?
mustn't she be furnishing?
mustn't we be furnishing?
mustn't you be furnishing?
mustn't they be furnishing? 	mustn't I have furnished?
mustn't you have furnished?
mustn't she have furnished?
mustn't we have furnished?
mustn't you have furnished?
mustn't they have furnished? 	mustn't I have been furnishing?
mustn't you have been furnishing?
mustn't she have been furnishing?
mustn't we have been furnishing?
mustn't you have been furnishing?
mustn't they have been furnishing?