Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must dinner you must dinner he must dinner we must dinner you must dinner they must dinner
V-ing form
I must be dinnering you must be dinnering he must be dinnering we must be dinnering you must be dinnering they must be dinnering
Perfect
I must have dinnered you must have dinnered he must have dinnered we must have dinnered you must have dinnered they must have dinnered
V-ing perfect
I must have been dinnering you must have been dinnering he must have been dinnering we must have been dinnering you must have been dinnering they must have been dinnering
Negation
Simple form
I mustn't dinner you mustn't dinner he mustn't dinner we mustn't dinner you mustn't dinner they mustn't dinner
V-ing form
I mustn't be dinnering you mustn't be dinnering he mustn't be dinnering we mustn't be dinnering you mustn't be dinnering they mustn't be dinnering
Perfect
I mustn't have dinnered you mustn't have dinnered he mustn't have dinnered we mustn't have dinnered you mustn't have dinnered they mustn't have dinnered
V-ing perfect
I mustn't have been dinnering you mustn't have been dinnering he mustn't have been dinnering we mustn't have been dinnering you mustn't have been dinnering they mustn't have been dinnering
Interrogative form
Simple form
must I dinner? must you dinner? must he dinner? must we dinner? must you dinner? must they dinner?
V-ing form
must I be dinnering? must you be dinnering? must he be dinnering? must we be dinnering? must you be dinnering? must they be dinnering?
Perfect
must I have dinnered? must you have dinnered? must he have dinnered? must we have dinnered? must you have dinnered? must they have dinnered?
V-ing perfect
must I have been dinnering? must you have been dinnering? must he have been dinnering? must we have been dinnering? must you have been dinnering? must they have been dinnering?
Interro-negative form
Simple form
mustn't I dinner? mustn't you dinner? mustn't he dinner? mustn't we dinner? mustn't you dinner? mustn't they dinner?
V-ing form
mustn't I be dinnering? mustn't you be dinnering? mustn't he be dinnering? mustn't we be dinnering? mustn't you be dinnering? mustn't they be dinnering?
Perfect
mustn't I have dinnered? mustn't you have dinnered? mustn't he have dinnered? mustn't we have dinnered? mustn't you have dinnered? mustn't they have dinnered?
V-ing perfect
mustn't I have been dinnering? mustn't you have been dinnering? mustn't he have been dinnering? mustn't we have been dinnering? mustn't you have been dinnering? mustn't they have been dinnering?