must prelude
Regular verb: prelude - preluded- preluded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prelude
you must prelude
he must prelude
we must prelude
you must prelude
they must prelude 	I must be preluding
you must be preluding
he must be preluding
we must be preluding
you must be preluding
they must be preluding	I must have preluded
you must have preluded
he must have preluded
we must have preluded
you must have preluded
they must have preluded	I must have been preluding
you must have been preluding
he must have been preluding
we must have been preluding
you must have been preluding
they must have been preluding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prelude
you mustn't prelude
he mustn't prelude
we mustn't prelude
you mustn't prelude
they mustn't prelude 	I mustn't be preluding
you mustn't be preluding
he mustn't be preluding
we mustn't be preluding
you mustn't be preluding
they mustn't be preluding	I mustn't have preluded
you mustn't have preluded
he mustn't have preluded
we mustn't have preluded
you mustn't have preluded
they mustn't have preluded	I mustn't have been preluding
you mustn't have been preluding
he mustn't have been preluding
we mustn't have been preluding
you mustn't have been preluding
they mustn't have been preluding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prelude?
must you prelude?
must he prelude?
must we prelude?
must you prelude?
must they prelude? 	must I be preluding?
must you be preluding?
must he be preluding?
must we be preluding?
must you be preluding?
must they be preluding? 	must I have preluded?
must you have preluded?
must he have preluded?
must we have preluded?
must you have preluded?
must they have preluded? 	must I have been preluding?
must you have been preluding?
must he have been preluding?
must we have been preluding?
must you have been preluding?
must they have been preluding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prelude?
mustn't you prelude?
mustn't he prelude?
mustn't we prelude?
mustn't you prelude?
mustn't they prelude? 	mustn't I be preluding?
mustn't you be preluding?
mustn't he be preluding?
mustn't we be preluding?
mustn't you be preluding?
mustn't they be preluding? 	mustn't I have preluded?
mustn't you have preluded?
mustn't he have preluded?
mustn't we have preluded?
mustn't you have preluded?
mustn't they have preluded? 	mustn't I have been preluding?
mustn't you have been preluding?
mustn't he have been preluding?
mustn't we have been preluding?
mustn't you have been preluding?
mustn't they have been preluding?