must subject
Regular verb: subject - subjected- subjected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must subject
you must subject
she must subject
we must subject
you must subject
they must subject 	I must be subjecting
you must be subjecting
she must be subjecting
we must be subjecting
you must be subjecting
they must be subjecting	I must have subjected
you must have subjected
she must have subjected
we must have subjected
you must have subjected
they must have subjected	I must have been subjecting
you must have been subjecting
she must have been subjecting
we must have been subjecting
you must have been subjecting
they must have been subjecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't subject
you mustn't subject
she mustn't subject
we mustn't subject
you mustn't subject
they mustn't subject 	I mustn't be subjecting
you mustn't be subjecting
she mustn't be subjecting
we mustn't be subjecting
you mustn't be subjecting
they mustn't be subjecting	I mustn't have subjected
you mustn't have subjected
she mustn't have subjected
we mustn't have subjected
you mustn't have subjected
they mustn't have subjected	I mustn't have been subjecting
you mustn't have been subjecting
she mustn't have been subjecting
we mustn't have been subjecting
you mustn't have been subjecting
they mustn't have been subjecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I subject?
must you subject?
must she subject?
must we subject?
must you subject?
must they subject? 	must I be subjecting?
must you be subjecting?
must she be subjecting?
must we be subjecting?
must you be subjecting?
must they be subjecting? 	must I have subjected?
must you have subjected?
must she have subjected?
must we have subjected?
must you have subjected?
must they have subjected? 	must I have been subjecting?
must you have been subjecting?
must she have been subjecting?
must we have been subjecting?
must you have been subjecting?
must they have been subjecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I subject?
mustn't you subject?
mustn't she subject?
mustn't we subject?
mustn't you subject?
mustn't they subject? 	mustn't I be subjecting?
mustn't you be subjecting?
mustn't she be subjecting?
mustn't we be subjecting?
mustn't you be subjecting?
mustn't they be subjecting? 	mustn't I have subjected?
mustn't you have subjected?
mustn't she have subjected?
mustn't we have subjected?
mustn't you have subjected?
mustn't they have subjected? 	mustn't I have been subjecting?
mustn't you have been subjecting?
mustn't she have been subjecting?
mustn't we have been subjecting?
mustn't you have been subjecting?
mustn't they have been subjecting?