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