I must deal you must deal she must deal we must deal you must deal they must deal
V-ing form
I must be dealing you must be dealing she must be dealing we must be dealing you must be dealing they must be dealing
Perfect
I must have dealt you must have dealt she must have dealt we must have dealt you must have dealt they must have dealt
V-ing perfect
I must have been dealing you must have been dealing she must have been dealing we must have been dealing you must have been dealing they must have been dealing
Negation
Simple form
I mustn't deal you mustn't deal she mustn't deal we mustn't deal you mustn't deal they mustn't deal
V-ing form
I mustn't be dealing you mustn't be dealing she mustn't be dealing we mustn't be dealing you mustn't be dealing they mustn't be dealing
Perfect
I mustn't have dealt you mustn't have dealt she mustn't have dealt we mustn't have dealt you mustn't have dealt they mustn't have dealt
V-ing perfect
I mustn't have been dealing you mustn't have been dealing she mustn't have been dealing we mustn't have been dealing you mustn't have been dealing they mustn't have been dealing
Interrogative form
Simple form
must I deal? must you deal? must she deal? must we deal? must you deal? must they deal?
V-ing form
must I be dealing? must you be dealing? must she be dealing? must we be dealing? must you be dealing? must they be dealing?
Perfect
must I have dealt? must you have dealt? must she have dealt? must we have dealt? must you have dealt? must they have dealt?
V-ing perfect
must I have been dealing? must you have been dealing? must she have been dealing? must we have been dealing? must you have been dealing? must they have been dealing?
Interro-negative form
Simple form
mustn't I deal? mustn't you deal? mustn't she deal? mustn't we deal? mustn't you deal? mustn't they deal?
V-ing form
mustn't I be dealing? mustn't you be dealing? mustn't she be dealing? mustn't we be dealing? mustn't you be dealing? mustn't they be dealing?
Perfect
mustn't I have dealt? mustn't you have dealt? mustn't she have dealt? mustn't we have dealt? mustn't you have dealt? mustn't they have dealt?
V-ing perfect
mustn't I have been dealing? mustn't you have been dealing? mustn't she have been dealing? mustn't we have been dealing? mustn't you have been dealing? mustn't they have been dealing?