must unearth
Regular verb: unearth - unearthed- unearthed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unearth
you must unearth
he must unearth
we must unearth
you must unearth
they must unearth 	I must be unearthing
you must be unearthing
he must be unearthing
we must be unearthing
you must be unearthing
they must be unearthing	I must have unearthed
you must have unearthed
he must have unearthed
we must have unearthed
you must have unearthed
they must have unearthed	I must have been unearthing
you must have been unearthing
he must have been unearthing
we must have been unearthing
you must have been unearthing
they must have been unearthing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unearth
you mustn't unearth
he mustn't unearth
we mustn't unearth
you mustn't unearth
they mustn't unearth 	I mustn't be unearthing
you mustn't be unearthing
he mustn't be unearthing
we mustn't be unearthing
you mustn't be unearthing
they mustn't be unearthing	I mustn't have unearthed
you mustn't have unearthed
he mustn't have unearthed
we mustn't have unearthed
you mustn't have unearthed
they mustn't have unearthed	I mustn't have been unearthing
you mustn't have been unearthing
he mustn't have been unearthing
we mustn't have been unearthing
you mustn't have been unearthing
they mustn't have been unearthing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unearth?
must you unearth?
must he unearth?
must we unearth?
must you unearth?
must they unearth? 	must I be unearthing?
must you be unearthing?
must he be unearthing?
must we be unearthing?
must you be unearthing?
must they be unearthing? 	must I have unearthed?
must you have unearthed?
must he have unearthed?
must we have unearthed?
must you have unearthed?
must they have unearthed? 	must I have been unearthing?
must you have been unearthing?
must he have been unearthing?
must we have been unearthing?
must you have been unearthing?
must they have been unearthing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unearth?
mustn't you unearth?
mustn't he unearth?
mustn't we unearth?
mustn't you unearth?
mustn't they unearth? 	mustn't I be unearthing?
mustn't you be unearthing?
mustn't he be unearthing?
mustn't we be unearthing?
mustn't you be unearthing?
mustn't they be unearthing? 	mustn't I have unearthed?
mustn't you have unearthed?
mustn't he have unearthed?
mustn't we have unearthed?
mustn't you have unearthed?
mustn't they have unearthed? 	mustn't I have been unearthing?
mustn't you have been unearthing?
mustn't he have been unearthing?
mustn't we have been unearthing?
mustn't you have been unearthing?
mustn't they have been unearthing?