must underemphasise
Regular verb: underemphasise - underemphasised- underemphasised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must underemphasise
you must underemphasise
he must underemphasise
we must underemphasise
you must underemphasise
they must underemphasise 	I must be underemphasising
you must be underemphasising
he must be underemphasising
we must be underemphasising
you must be underemphasising
they must be underemphasising	I must have underemphasised
you must have underemphasised
he must have underemphasised
we must have underemphasised
you must have underemphasised
they must have underemphasised	I must have been underemphasising
you must have been underemphasising
he must have been underemphasising
we must have been underemphasising
you must have been underemphasising
they must have been underemphasising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't underemphasise
you mustn't underemphasise
he mustn't underemphasise
we mustn't underemphasise
you mustn't underemphasise
they mustn't underemphasise 	I mustn't be underemphasising
you mustn't be underemphasising
he mustn't be underemphasising
we mustn't be underemphasising
you mustn't be underemphasising
they mustn't be underemphasising	I mustn't have underemphasised
you mustn't have underemphasised
he mustn't have underemphasised
we mustn't have underemphasised
you mustn't have underemphasised
they mustn't have underemphasised	I mustn't have been underemphasising
you mustn't have been underemphasising
he mustn't have been underemphasising
we mustn't have been underemphasising
you mustn't have been underemphasising
they mustn't have been underemphasising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I underemphasise?
must you underemphasise?
must he underemphasise?
must we underemphasise?
must you underemphasise?
must they underemphasise? 	must I be underemphasising?
must you be underemphasising?
must he be underemphasising?
must we be underemphasising?
must you be underemphasising?
must they be underemphasising? 	must I have underemphasised?
must you have underemphasised?
must he have underemphasised?
must we have underemphasised?
must you have underemphasised?
must they have underemphasised? 	must I have been underemphasising?
must you have been underemphasising?
must he have been underemphasising?
must we have been underemphasising?
must you have been underemphasising?
must they have been underemphasising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I underemphasise?
mustn't you underemphasise?
mustn't he underemphasise?
mustn't we underemphasise?
mustn't you underemphasise?
mustn't they underemphasise? 	mustn't I be underemphasising?
mustn't you be underemphasising?
mustn't he be underemphasising?
mustn't we be underemphasising?
mustn't you be underemphasising?
mustn't they be underemphasising? 	mustn't I have underemphasised?
mustn't you have underemphasised?
mustn't he have underemphasised?
mustn't we have underemphasised?
mustn't you have underemphasised?
mustn't they have underemphasised? 	mustn't I have been underemphasising?
mustn't you have been underemphasising?
mustn't he have been underemphasising?
mustn't we have been underemphasising?
mustn't you have been underemphasising?
mustn't they have been underemphasising?