must flux
Regular verb: flux - fluxed- fluxed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must flux
you must flux
she must flux
we must flux
you must flux
they must flux 	I must be fluxing
you must be fluxing
she must be fluxing
we must be fluxing
you must be fluxing
they must be fluxing	I must have fluxed
you must have fluxed
she must have fluxed
we must have fluxed
you must have fluxed
they must have fluxed	I must have been fluxing
you must have been fluxing
she must have been fluxing
we must have been fluxing
you must have been fluxing
they must have been fluxing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't flux
you mustn't flux
she mustn't flux
we mustn't flux
you mustn't flux
they mustn't flux 	I mustn't be fluxing
you mustn't be fluxing
she mustn't be fluxing
we mustn't be fluxing
you mustn't be fluxing
they mustn't be fluxing	I mustn't have fluxed
you mustn't have fluxed
she mustn't have fluxed
we mustn't have fluxed
you mustn't have fluxed
they mustn't have fluxed	I mustn't have been fluxing
you mustn't have been fluxing
she mustn't have been fluxing
we mustn't have been fluxing
you mustn't have been fluxing
they mustn't have been fluxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I flux?
must you flux?
must she flux?
must we flux?
must you flux?
must they flux? 	must I be fluxing?
must you be fluxing?
must she be fluxing?
must we be fluxing?
must you be fluxing?
must they be fluxing? 	must I have fluxed?
must you have fluxed?
must she have fluxed?
must we have fluxed?
must you have fluxed?
must they have fluxed? 	must I have been fluxing?
must you have been fluxing?
must she have been fluxing?
must we have been fluxing?
must you have been fluxing?
must they have been fluxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I flux?
mustn't you flux?
mustn't she flux?
mustn't we flux?
mustn't you flux?
mustn't they flux? 	mustn't I be fluxing?
mustn't you be fluxing?
mustn't she be fluxing?
mustn't we be fluxing?
mustn't you be fluxing?
mustn't they be fluxing? 	mustn't I have fluxed?
mustn't you have fluxed?
mustn't she have fluxed?
mustn't we have fluxed?
mustn't you have fluxed?
mustn't they have fluxed? 	mustn't I have been fluxing?
mustn't you have been fluxing?
mustn't she have been fluxing?
mustn't we have been fluxing?
mustn't you have been fluxing?
mustn't they have been fluxing?