must mute
Regular verb: mute - muted- muted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must mute
you must mute
he must mute
we must mute
you must mute
they must mute 	I must be muting
you must be muting
he must be muting
we must be muting
you must be muting
they must be muting	I must have muted
you must have muted
he must have muted
we must have muted
you must have muted
they must have muted	I must have been muting
you must have been muting
he must have been muting
we must have been muting
you must have been muting
they must have been muting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't mute
you mustn't mute
he mustn't mute
we mustn't mute
you mustn't mute
they mustn't mute 	I mustn't be muting
you mustn't be muting
he mustn't be muting
we mustn't be muting
you mustn't be muting
they mustn't be muting	I mustn't have muted
you mustn't have muted
he mustn't have muted
we mustn't have muted
you mustn't have muted
they mustn't have muted	I mustn't have been muting
you mustn't have been muting
he mustn't have been muting
we mustn't have been muting
you mustn't have been muting
they mustn't have been muting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I mute?
must you mute?
must he mute?
must we mute?
must you mute?
must they mute? 	must I be muting?
must you be muting?
must he be muting?
must we be muting?
must you be muting?
must they be muting? 	must I have muted?
must you have muted?
must he have muted?
must we have muted?
must you have muted?
must they have muted? 	must I have been muting?
must you have been muting?
must he have been muting?
must we have been muting?
must you have been muting?
must they have been muting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I mute?
mustn't you mute?
mustn't he mute?
mustn't we mute?
mustn't you mute?
mustn't they mute? 	mustn't I be muting?
mustn't you be muting?
mustn't he be muting?
mustn't we be muting?
mustn't you be muting?
mustn't they be muting? 	mustn't I have muted?
mustn't you have muted?
mustn't he have muted?
mustn't we have muted?
mustn't you have muted?
mustn't they have muted? 	mustn't I have been muting?
mustn't you have been muting?
mustn't he have been muting?
mustn't we have been muting?
mustn't you have been muting?
mustn't they have been muting?