must refortify
Regular verb: refortify - refortified- refortified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must refortify
you must refortify
he must refortify
we must refortify
you must refortify
they must refortify 	I must be refortifying
you must be refortifying
he must be refortifying
we must be refortifying
you must be refortifying
they must be refortifying	I must have refortified
you must have refortified
he must have refortified
we must have refortified
you must have refortified
they must have refortified	I must have been refortifying
you must have been refortifying
he must have been refortifying
we must have been refortifying
you must have been refortifying
they must have been refortifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't refortify
you mustn't refortify
he mustn't refortify
we mustn't refortify
you mustn't refortify
they mustn't refortify 	I mustn't be refortifying
you mustn't be refortifying
he mustn't be refortifying
we mustn't be refortifying
you mustn't be refortifying
they mustn't be refortifying	I mustn't have refortified
you mustn't have refortified
he mustn't have refortified
we mustn't have refortified
you mustn't have refortified
they mustn't have refortified	I mustn't have been refortifying
you mustn't have been refortifying
he mustn't have been refortifying
we mustn't have been refortifying
you mustn't have been refortifying
they mustn't have been refortifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I refortify?
must you refortify?
must he refortify?
must we refortify?
must you refortify?
must they refortify? 	must I be refortifying?
must you be refortifying?
must he be refortifying?
must we be refortifying?
must you be refortifying?
must they be refortifying? 	must I have refortified?
must you have refortified?
must he have refortified?
must we have refortified?
must you have refortified?
must they have refortified? 	must I have been refortifying?
must you have been refortifying?
must he have been refortifying?
must we have been refortifying?
must you have been refortifying?
must they have been refortifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I refortify?
mustn't you refortify?
mustn't he refortify?
mustn't we refortify?
mustn't you refortify?
mustn't they refortify? 	mustn't I be refortifying?
mustn't you be refortifying?
mustn't he be refortifying?
mustn't we be refortifying?
mustn't you be refortifying?
mustn't they be refortifying? 	mustn't I have refortified?
mustn't you have refortified?
mustn't he have refortified?
mustn't we have refortified?
mustn't you have refortified?
mustn't they have refortified? 	mustn't I have been refortifying?
mustn't you have been refortifying?
mustn't he have been refortifying?
mustn't we have been refortifying?
mustn't you have been refortifying?
mustn't they have been refortifying?