must chorus
Regular verb: chorus - chorused- chorused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must chorus
you must chorus
he must chorus
we must chorus
you must chorus
they must chorus 	I must be chorusing
you must be chorusing
he must be chorusing
we must be chorusing
you must be chorusing
they must be chorusing	I must have chorused
you must have chorused
he must have chorused
we must have chorused
you must have chorused
they must have chorused	I must have been chorusing
you must have been chorusing
he must have been chorusing
we must have been chorusing
you must have been chorusing
they must have been chorusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't chorus
you mustn't chorus
he mustn't chorus
we mustn't chorus
you mustn't chorus
they mustn't chorus 	I mustn't be chorusing
you mustn't be chorusing
he mustn't be chorusing
we mustn't be chorusing
you mustn't be chorusing
they mustn't be chorusing	I mustn't have chorused
you mustn't have chorused
he mustn't have chorused
we mustn't have chorused
you mustn't have chorused
they mustn't have chorused	I mustn't have been chorusing
you mustn't have been chorusing
he mustn't have been chorusing
we mustn't have been chorusing
you mustn't have been chorusing
they mustn't have been chorusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I chorus?
must you chorus?
must he chorus?
must we chorus?
must you chorus?
must they chorus? 	must I be chorusing?
must you be chorusing?
must he be chorusing?
must we be chorusing?
must you be chorusing?
must they be chorusing? 	must I have chorused?
must you have chorused?
must he have chorused?
must we have chorused?
must you have chorused?
must they have chorused? 	must I have been chorusing?
must you have been chorusing?
must he have been chorusing?
must we have been chorusing?
must you have been chorusing?
must they have been chorusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I chorus?
mustn't you chorus?
mustn't he chorus?
mustn't we chorus?
mustn't you chorus?
mustn't they chorus? 	mustn't I be chorusing?
mustn't you be chorusing?
mustn't he be chorusing?
mustn't we be chorusing?
mustn't you be chorusing?
mustn't they be chorusing? 	mustn't I have chorused?
mustn't you have chorused?
mustn't he have chorused?
mustn't we have chorused?
mustn't you have chorused?
mustn't they have chorused? 	mustn't I have been chorusing?
mustn't you have been chorusing?
mustn't he have been chorusing?
mustn't we have been chorusing?
mustn't you have been chorusing?
mustn't they have been chorusing?