must dispel
Regular verb: dispel - dispelled- dispelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must dispel
you must dispel
he must dispel
we must dispel
you must dispel
they must dispel 	I must be dispelling
you must be dispelling
he must be dispelling
we must be dispelling
you must be dispelling
they must be dispelling	I must have dispelled
you must have dispelled
he must have dispelled
we must have dispelled
you must have dispelled
they must have dispelled	I must have been dispelling
you must have been dispelling
he must have been dispelling
we must have been dispelling
you must have been dispelling
they must have been dispelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't dispel
you mustn't dispel
he mustn't dispel
we mustn't dispel
you mustn't dispel
they mustn't dispel 	I mustn't be dispelling
you mustn't be dispelling
he mustn't be dispelling
we mustn't be dispelling
you mustn't be dispelling
they mustn't be dispelling	I mustn't have dispelled
you mustn't have dispelled
he mustn't have dispelled
we mustn't have dispelled
you mustn't have dispelled
they mustn't have dispelled	I mustn't have been dispelling
you mustn't have been dispelling
he mustn't have been dispelling
we mustn't have been dispelling
you mustn't have been dispelling
they mustn't have been dispelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I dispel?
must you dispel?
must he dispel?
must we dispel?
must you dispel?
must they dispel? 	must I be dispelling?
must you be dispelling?
must he be dispelling?
must we be dispelling?
must you be dispelling?
must they be dispelling? 	must I have dispelled?
must you have dispelled?
must he have dispelled?
must we have dispelled?
must you have dispelled?
must they have dispelled? 	must I have been dispelling?
must you have been dispelling?
must he have been dispelling?
must we have been dispelling?
must you have been dispelling?
must they have been dispelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I dispel?
mustn't you dispel?
mustn't he dispel?
mustn't we dispel?
mustn't you dispel?
mustn't they dispel? 	mustn't I be dispelling?
mustn't you be dispelling?
mustn't he be dispelling?
mustn't we be dispelling?
mustn't you be dispelling?
mustn't they be dispelling? 	mustn't I have dispelled?
mustn't you have dispelled?
mustn't he have dispelled?
mustn't we have dispelled?
mustn't you have dispelled?
mustn't they have dispelled? 	mustn't I have been dispelling?
mustn't you have been dispelling?
mustn't he have been dispelling?
mustn't we have been dispelling?
mustn't you have been dispelling?
mustn't they have been dispelling?