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