must preach
Regular verb: preach - preached- preached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must preach
you must preach
he must preach
we must preach
you must preach
they must preach 	I must be preaching
you must be preaching
he must be preaching
we must be preaching
you must be preaching
they must be preaching	I must have preached
you must have preached
he must have preached
we must have preached
you must have preached
they must have preached	I must have been preaching
you must have been preaching
he must have been preaching
we must have been preaching
you must have been preaching
they must have been preaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't preach
you mustn't preach
he mustn't preach
we mustn't preach
you mustn't preach
they mustn't preach 	I mustn't be preaching
you mustn't be preaching
he mustn't be preaching
we mustn't be preaching
you mustn't be preaching
they mustn't be preaching	I mustn't have preached
you mustn't have preached
he mustn't have preached
we mustn't have preached
you mustn't have preached
they mustn't have preached	I mustn't have been preaching
you mustn't have been preaching
he mustn't have been preaching
we mustn't have been preaching
you mustn't have been preaching
they mustn't have been preaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I preach?
must you preach?
must he preach?
must we preach?
must you preach?
must they preach? 	must I be preaching?
must you be preaching?
must he be preaching?
must we be preaching?
must you be preaching?
must they be preaching? 	must I have preached?
must you have preached?
must he have preached?
must we have preached?
must you have preached?
must they have preached? 	must I have been preaching?
must you have been preaching?
must he have been preaching?
must we have been preaching?
must you have been preaching?
must they have been preaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I preach?
mustn't you preach?
mustn't he preach?
mustn't we preach?
mustn't you preach?
mustn't they preach? 	mustn't I be preaching?
mustn't you be preaching?
mustn't he be preaching?
mustn't we be preaching?
mustn't you be preaching?
mustn't they be preaching? 	mustn't I have preached?
mustn't you have preached?
mustn't he have preached?
mustn't we have preached?
mustn't you have preached?
mustn't they have preached? 	mustn't I have been preaching?
mustn't you have been preaching?
mustn't he have been preaching?
mustn't we have been preaching?
mustn't you have been preaching?
mustn't they have been preaching?