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 must not prelude
you must not prelude
he must not prelude
we must not prelude
you must not prelude
they must not prelude 	I must not be preluding
you must not be preluding
he must not be preluding
we must not be preluding
you must not be preluding
they must not be preluding	I must not have preluded
you must not have preluded
he must not have preluded
we must not have preluded
you must not have preluded
they must not have preluded	I must not have been preluding
you must not have been preluding
he must not have been preluding
we must not have been preluding
you must not have been preluding
they must not 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 	
must I not prelude?
must you not prelude?
must he not prelude?
must we not prelude?
must you not prelude?
must they not prelude? 	must I not be preluding?
must you not be preluding?
must he not be preluding?
must we not be preluding?
must you not be preluding?
must they not be preluding? 	must I not have preluded?
must you not have preluded?
must he not have preluded?
must we not have preluded?
must you not have preluded?
must they not have preluded? 	must I not have been preluding?
must you not have been preluding?
must he not have been preluding?
must we not have been preluding?
must you not have been preluding?
must they not have been preluding?