must dispute
Regular verb: dispute - disputed- disputed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must dispute
you must dispute
she must dispute
we must dispute
you must dispute
they must dispute 	I must be disputing
you must be disputing
she must be disputing
we must be disputing
you must be disputing
they must be disputing	I must have disputed
you must have disputed
she must have disputed
we must have disputed
you must have disputed
they must have disputed	I must have been disputing
you must have been disputing
she must have been disputing
we must have been disputing
you must have been disputing
they must have been disputing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't dispute
you mustn't dispute
she mustn't dispute
we mustn't dispute
you mustn't dispute
they mustn't dispute 	I mustn't be disputing
you mustn't be disputing
she mustn't be disputing
we mustn't be disputing
you mustn't be disputing
they mustn't be disputing	I mustn't have disputed
you mustn't have disputed
she mustn't have disputed
we mustn't have disputed
you mustn't have disputed
they mustn't have disputed	I mustn't have been disputing
you mustn't have been disputing
she mustn't have been disputing
we mustn't have been disputing
you mustn't have been disputing
they mustn't have been disputing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I dispute?
must you dispute?
must she dispute?
must we dispute?
must you dispute?
must they dispute? 	must I be disputing?
must you be disputing?
must she be disputing?
must we be disputing?
must you be disputing?
must they be disputing? 	must I have disputed?
must you have disputed?
must she have disputed?
must we have disputed?
must you have disputed?
must they have disputed? 	must I have been disputing?
must you have been disputing?
must she have been disputing?
must we have been disputing?
must you have been disputing?
must they have been disputing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I dispute?
mustn't you dispute?
mustn't she dispute?
mustn't we dispute?
mustn't you dispute?
mustn't they dispute? 	mustn't I be disputing?
mustn't you be disputing?
mustn't she be disputing?
mustn't we be disputing?
mustn't you be disputing?
mustn't they be disputing? 	mustn't I have disputed?
mustn't you have disputed?
mustn't she have disputed?
mustn't we have disputed?
mustn't you have disputed?
mustn't they have disputed? 	mustn't I have been disputing?
mustn't you have been disputing?
mustn't she have been disputing?
mustn't we have been disputing?
mustn't you have been disputing?
mustn't they have been disputing?