I must arrange you must arrange he must arrange we must arrange you must arrange they must arrange
V-ing form
I must be arranging you must be arranging he must be arranging we must be arranging you must be arranging they must be arranging
Perfect
I must have arranged you must have arranged he must have arranged we must have arranged you must have arranged they must have arranged
V-ing perfect
I must have been arranging you must have been arranging he must have been arranging we must have been arranging you must have been arranging they must have been arranging
Negation
Simple form
I mustn't arrange you mustn't arrange he mustn't arrange we mustn't arrange you mustn't arrange they mustn't arrange
V-ing form
I mustn't be arranging you mustn't be arranging he mustn't be arranging we mustn't be arranging you mustn't be arranging they mustn't be arranging
Perfect
I mustn't have arranged you mustn't have arranged he mustn't have arranged we mustn't have arranged you mustn't have arranged they mustn't have arranged
V-ing perfect
I mustn't have been arranging you mustn't have been arranging he mustn't have been arranging we mustn't have been arranging you mustn't have been arranging they mustn't have been arranging
Interrogative form
Simple form
must I arrange? must you arrange? must he arrange? must we arrange? must you arrange? must they arrange?
V-ing form
must I be arranging? must you be arranging? must he be arranging? must we be arranging? must you be arranging? must they be arranging?
Perfect
must I have arranged? must you have arranged? must he have arranged? must we have arranged? must you have arranged? must they have arranged?
V-ing perfect
must I have been arranging? must you have been arranging? must he have been arranging? must we have been arranging? must you have been arranging? must they have been arranging?
Interro-negative form
Simple form
mustn't I arrange? mustn't you arrange? mustn't he arrange? mustn't we arrange? mustn't you arrange? mustn't they arrange?
V-ing form
mustn't I be arranging? mustn't you be arranging? mustn't he be arranging? mustn't we be arranging? mustn't you be arranging? mustn't they be arranging?
Perfect
mustn't I have arranged? mustn't you have arranged? mustn't he have arranged? mustn't we have arranged? mustn't you have arranged? mustn't they have arranged?
V-ing perfect
mustn't I have been arranging? mustn't you have been arranging? mustn't he have been arranging? mustn't we have been arranging? mustn't you have been arranging? mustn't they have been arranging?