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