must overmuster
Regular verb: overmuster - overmustered- overmustered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must overmuster
you must overmuster
he must overmuster
we must overmuster
you must overmuster
they must overmuster 	I must be overmustering
you must be overmustering
he must be overmustering
we must be overmustering
you must be overmustering
they must be overmustering	I must have overmustered
you must have overmustered
he must have overmustered
we must have overmustered
you must have overmustered
they must have overmustered	I must have been overmustering
you must have been overmustering
he must have been overmustering
we must have been overmustering
you must have been overmustering
they must have been overmustering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't overmuster
you mustn't overmuster
he mustn't overmuster
we mustn't overmuster
you mustn't overmuster
they mustn't overmuster 	I mustn't be overmustering
you mustn't be overmustering
he mustn't be overmustering
we mustn't be overmustering
you mustn't be overmustering
they mustn't be overmustering	I mustn't have overmustered
you mustn't have overmustered
he mustn't have overmustered
we mustn't have overmustered
you mustn't have overmustered
they mustn't have overmustered	I mustn't have been overmustering
you mustn't have been overmustering
he mustn't have been overmustering
we mustn't have been overmustering
you mustn't have been overmustering
they mustn't have been overmustering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I overmuster?
must you overmuster?
must he overmuster?
must we overmuster?
must you overmuster?
must they overmuster? 	must I be overmustering?
must you be overmustering?
must he be overmustering?
must we be overmustering?
must you be overmustering?
must they be overmustering? 	must I have overmustered?
must you have overmustered?
must he have overmustered?
must we have overmustered?
must you have overmustered?
must they have overmustered? 	must I have been overmustering?
must you have been overmustering?
must he have been overmustering?
must we have been overmustering?
must you have been overmustering?
must they have been overmustering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I overmuster?
mustn't you overmuster?
mustn't he overmuster?
mustn't we overmuster?
mustn't you overmuster?
mustn't they overmuster? 	mustn't I be overmustering?
mustn't you be overmustering?
mustn't he be overmustering?
mustn't we be overmustering?
mustn't you be overmustering?
mustn't they be overmustering? 	mustn't I have overmustered?
mustn't you have overmustered?
mustn't he have overmustered?
mustn't we have overmustered?
mustn't you have overmustered?
mustn't they have overmustered? 	mustn't I have been overmustering?
mustn't you have been overmustering?
mustn't he have been overmustering?
mustn't we have been overmustering?
mustn't you have been overmustering?
mustn't they have been overmustering?