must defame
Regular verb: defame - defamed- defamed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must defame
you must defame
he must defame
we must defame
you must defame
they must defame 	I must be defaming
you must be defaming
he must be defaming
we must be defaming
you must be defaming
they must be defaming	I must have defamed
you must have defamed
he must have defamed
we must have defamed
you must have defamed
they must have defamed	I must have been defaming
you must have been defaming
he must have been defaming
we must have been defaming
you must have been defaming
they must have been defaming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't defame
you mustn't defame
he mustn't defame
we mustn't defame
you mustn't defame
they mustn't defame 	I mustn't be defaming
you mustn't be defaming
he mustn't be defaming
we mustn't be defaming
you mustn't be defaming
they mustn't be defaming	I mustn't have defamed
you mustn't have defamed
he mustn't have defamed
we mustn't have defamed
you mustn't have defamed
they mustn't have defamed	I mustn't have been defaming
you mustn't have been defaming
he mustn't have been defaming
we mustn't have been defaming
you mustn't have been defaming
they mustn't have been defaming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I defame?
must you defame?
must he defame?
must we defame?
must you defame?
must they defame? 	must I be defaming?
must you be defaming?
must he be defaming?
must we be defaming?
must you be defaming?
must they be defaming? 	must I have defamed?
must you have defamed?
must he have defamed?
must we have defamed?
must you have defamed?
must they have defamed? 	must I have been defaming?
must you have been defaming?
must he have been defaming?
must we have been defaming?
must you have been defaming?
must they have been defaming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I defame?
mustn't you defame?
mustn't he defame?
mustn't we defame?
mustn't you defame?
mustn't they defame? 	mustn't I be defaming?
mustn't you be defaming?
mustn't he be defaming?
mustn't we be defaming?
mustn't you be defaming?
mustn't they be defaming? 	mustn't I have defamed?
mustn't you have defamed?
mustn't he have defamed?
mustn't we have defamed?
mustn't you have defamed?
mustn't they have defamed? 	mustn't I have been defaming?
mustn't you have been defaming?
mustn't he have been defaming?
mustn't we have been defaming?
mustn't you have been defaming?
mustn't they have been defaming?