must murder
Regular verb: murder - murdered- murdered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must murder
you must murder
she must murder
we must murder
you must murder
they must murder 	I must be murdering
you must be murdering
she must be murdering
we must be murdering
you must be murdering
they must be murdering	I must have murdered
you must have murdered
she must have murdered
we must have murdered
you must have murdered
they must have murdered	I must have been murdering
you must have been murdering
she must have been murdering
we must have been murdering
you must have been murdering
they must have been murdering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't murder
you mustn't murder
she mustn't murder
we mustn't murder
you mustn't murder
they mustn't murder 	I mustn't be murdering
you mustn't be murdering
she mustn't be murdering
we mustn't be murdering
you mustn't be murdering
they mustn't be murdering	I mustn't have murdered
you mustn't have murdered
she mustn't have murdered
we mustn't have murdered
you mustn't have murdered
they mustn't have murdered	I mustn't have been murdering
you mustn't have been murdering
she mustn't have been murdering
we mustn't have been murdering
you mustn't have been murdering
they mustn't have been murdering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I murder?
must you murder?
must she murder?
must we murder?
must you murder?
must they murder? 	must I be murdering?
must you be murdering?
must she be murdering?
must we be murdering?
must you be murdering?
must they be murdering? 	must I have murdered?
must you have murdered?
must she have murdered?
must we have murdered?
must you have murdered?
must they have murdered? 	must I have been murdering?
must you have been murdering?
must she have been murdering?
must we have been murdering?
must you have been murdering?
must they have been murdering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I murder?
mustn't you murder?
mustn't she murder?
mustn't we murder?
mustn't you murder?
mustn't they murder? 	mustn't I be murdering?
mustn't you be murdering?
mustn't she be murdering?
mustn't we be murdering?
mustn't you be murdering?
mustn't they be murdering? 	mustn't I have murdered?
mustn't you have murdered?
mustn't she have murdered?
mustn't we have murdered?
mustn't you have murdered?
mustn't they have murdered? 	mustn't I have been murdering?
mustn't you have been murdering?
mustn't she have been murdering?
mustn't we have been murdering?
mustn't you have been murdering?
mustn't they have been murdering?