must dispel
Regular verb: dispel - dispelled- dispelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must dispel
you must dispel
she must dispel
we must dispel
you must dispel
they must dispel 	I must be dispelling
you must be dispelling
she must be dispelling
we must be dispelling
you must be dispelling
they must be dispelling	I must have dispelled
you must have dispelled
she 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
she 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
she 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
she 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
she 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
she 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 she dispel?
must we dispel?
must you dispel?
must they dispel? 	must I be dispelling?
must you be dispelling?
must she be dispelling?
must we be dispelling?
must you be dispelling?
must they be dispelling? 	must I have dispelled?
must you have dispelled?
must she 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 she 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 she 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 she 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 she 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 she have been dispelling?
mustn't we have been dispelling?
mustn't you have been dispelling?
mustn't they have been dispelling?