must flim-flam
Regular verb: flim-flam - flim-flamed- flim-flamed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must flim-flam
you must flim-flam
he must flim-flam
we must flim-flam
you must flim-flam
they must flim-flam 	I must be flim-flaming
you must be flim-flaming
he must be flim-flaming
we must be flim-flaming
you must be flim-flaming
they must be flim-flaming	I must have flim-flamed
you must have flim-flamed
he must have flim-flamed
we must have flim-flamed
you must have flim-flamed
they must have flim-flamed	I must have been flim-flaming
you must have been flim-flaming
he must have been flim-flaming
we must have been flim-flaming
you must have been flim-flaming
they must have been flim-flaming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't flim-flam
you mustn't flim-flam
he mustn't flim-flam
we mustn't flim-flam
you mustn't flim-flam
they mustn't flim-flam 	I mustn't be flim-flaming
you mustn't be flim-flaming
he mustn't be flim-flaming
we mustn't be flim-flaming
you mustn't be flim-flaming
they mustn't be flim-flaming	I mustn't have flim-flamed
you mustn't have flim-flamed
he mustn't have flim-flamed
we mustn't have flim-flamed
you mustn't have flim-flamed
they mustn't have flim-flamed	I mustn't have been flim-flaming
you mustn't have been flim-flaming
he mustn't have been flim-flaming
we mustn't have been flim-flaming
you mustn't have been flim-flaming
they mustn't have been flim-flaming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I flim-flam?
must you flim-flam?
must he flim-flam?
must we flim-flam?
must you flim-flam?
must they flim-flam? 	must I be flim-flaming?
must you be flim-flaming?
must he be flim-flaming?
must we be flim-flaming?
must you be flim-flaming?
must they be flim-flaming? 	must I have flim-flamed?
must you have flim-flamed?
must he have flim-flamed?
must we have flim-flamed?
must you have flim-flamed?
must they have flim-flamed? 	must I have been flim-flaming?
must you have been flim-flaming?
must he have been flim-flaming?
must we have been flim-flaming?
must you have been flim-flaming?
must they have been flim-flaming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I flim-flam?
mustn't you flim-flam?
mustn't he flim-flam?
mustn't we flim-flam?
mustn't you flim-flam?
mustn't they flim-flam? 	mustn't I be flim-flaming?
mustn't you be flim-flaming?
mustn't he be flim-flaming?
mustn't we be flim-flaming?
mustn't you be flim-flaming?
mustn't they be flim-flaming? 	mustn't I have flim-flamed?
mustn't you have flim-flamed?
mustn't he have flim-flamed?
mustn't we have flim-flamed?
mustn't you have flim-flamed?
mustn't they have flim-flamed? 	mustn't I have been flim-flaming?
mustn't you have been flim-flaming?
mustn't he have been flim-flaming?
mustn't we have been flim-flaming?
mustn't you have been flim-flaming?
mustn't they have been flim-flaming?