must distress
Regular verb: distress - distressed- distressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must distress
you must distress
he must distress
we must distress
you must distress
they must distress 	I must be distressing
you must be distressing
he must be distressing
we must be distressing
you must be distressing
they must be distressing	I must have distressed
you must have distressed
he must have distressed
we must have distressed
you must have distressed
they must have distressed	I must have been distressing
you must have been distressing
he must have been distressing
we must have been distressing
you must have been distressing
they must have been distressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't distress
you mustn't distress
he mustn't distress
we mustn't distress
you mustn't distress
they mustn't distress 	I mustn't be distressing
you mustn't be distressing
he mustn't be distressing
we mustn't be distressing
you mustn't be distressing
they mustn't be distressing	I mustn't have distressed
you mustn't have distressed
he mustn't have distressed
we mustn't have distressed
you mustn't have distressed
they mustn't have distressed	I mustn't have been distressing
you mustn't have been distressing
he mustn't have been distressing
we mustn't have been distressing
you mustn't have been distressing
they mustn't have been distressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I distress?
must you distress?
must he distress?
must we distress?
must you distress?
must they distress? 	must I be distressing?
must you be distressing?
must he be distressing?
must we be distressing?
must you be distressing?
must they be distressing? 	must I have distressed?
must you have distressed?
must he have distressed?
must we have distressed?
must you have distressed?
must they have distressed? 	must I have been distressing?
must you have been distressing?
must he have been distressing?
must we have been distressing?
must you have been distressing?
must they have been distressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I distress?
mustn't you distress?
mustn't he distress?
mustn't we distress?
mustn't you distress?
mustn't they distress? 	mustn't I be distressing?
mustn't you be distressing?
mustn't he be distressing?
mustn't we be distressing?
mustn't you be distressing?
mustn't they be distressing? 	mustn't I have distressed?
mustn't you have distressed?
mustn't he have distressed?
mustn't we have distressed?
mustn't you have distressed?
mustn't they have distressed? 	mustn't I have been distressing?
mustn't you have been distressing?
mustn't he have been distressing?
mustn't we have been distressing?
mustn't you have been distressing?
mustn't they have been distressing?