must disgrace
Regular verb: disgrace - disgraced- disgraced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disgrace
you must disgrace
she must disgrace
we must disgrace
you must disgrace
they must disgrace 	I must be disgracing
you must be disgracing
she must be disgracing
we must be disgracing
you must be disgracing
they must be disgracing	I must have disgraced
you must have disgraced
she must have disgraced
we must have disgraced
you must have disgraced
they must have disgraced	I must have been disgracing
you must have been disgracing
she must have been disgracing
we must have been disgracing
you must have been disgracing
they must have been disgracing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't disgrace
you mustn't disgrace
she mustn't disgrace
we mustn't disgrace
you mustn't disgrace
they mustn't disgrace 	I mustn't be disgracing
you mustn't be disgracing
she mustn't be disgracing
we mustn't be disgracing
you mustn't be disgracing
they mustn't be disgracing	I mustn't have disgraced
you mustn't have disgraced
she mustn't have disgraced
we mustn't have disgraced
you mustn't have disgraced
they mustn't have disgraced	I mustn't have been disgracing
you mustn't have been disgracing
she mustn't have been disgracing
we mustn't have been disgracing
you mustn't have been disgracing
they mustn't have been disgracing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disgrace?
must you disgrace?
must she disgrace?
must we disgrace?
must you disgrace?
must they disgrace? 	must I be disgracing?
must you be disgracing?
must she be disgracing?
must we be disgracing?
must you be disgracing?
must they be disgracing? 	must I have disgraced?
must you have disgraced?
must she have disgraced?
must we have disgraced?
must you have disgraced?
must they have disgraced? 	must I have been disgracing?
must you have been disgracing?
must she have been disgracing?
must we have been disgracing?
must you have been disgracing?
must they have been disgracing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I disgrace?
mustn't you disgrace?
mustn't she disgrace?
mustn't we disgrace?
mustn't you disgrace?
mustn't they disgrace? 	mustn't I be disgracing?
mustn't you be disgracing?
mustn't she be disgracing?
mustn't we be disgracing?
mustn't you be disgracing?
mustn't they be disgracing? 	mustn't I have disgraced?
mustn't you have disgraced?
mustn't she have disgraced?
mustn't we have disgraced?
mustn't you have disgraced?
mustn't they have disgraced? 	mustn't I have been disgracing?
mustn't you have been disgracing?
mustn't she have been disgracing?
mustn't we have been disgracing?
mustn't you have been disgracing?
mustn't they have been disgracing?