must guest-star
Regular verb: guest-star - guest-stared- guest-stared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must guest-star
you must guest-star
he must guest-star
we must guest-star
you must guest-star
they must guest-star 	I must be guest-staring
you must be guest-staring
he must be guest-staring
we must be guest-staring
you must be guest-staring
they must be guest-staring	I must have guest-stared
you must have guest-stared
he must have guest-stared
we must have guest-stared
you must have guest-stared
they must have guest-stared	I must have been guest-staring
you must have been guest-staring
he must have been guest-staring
we must have been guest-staring
you must have been guest-staring
they must have been guest-staring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't guest-star
you mustn't guest-star
he mustn't guest-star
we mustn't guest-star
you mustn't guest-star
they mustn't guest-star 	I mustn't be guest-staring
you mustn't be guest-staring
he mustn't be guest-staring
we mustn't be guest-staring
you mustn't be guest-staring
they mustn't be guest-staring	I mustn't have guest-stared
you mustn't have guest-stared
he mustn't have guest-stared
we mustn't have guest-stared
you mustn't have guest-stared
they mustn't have guest-stared	I mustn't have been guest-staring
you mustn't have been guest-staring
he mustn't have been guest-staring
we mustn't have been guest-staring
you mustn't have been guest-staring
they mustn't have been guest-staring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I guest-star?
must you guest-star?
must he guest-star?
must we guest-star?
must you guest-star?
must they guest-star? 	must I be guest-staring?
must you be guest-staring?
must he be guest-staring?
must we be guest-staring?
must you be guest-staring?
must they be guest-staring? 	must I have guest-stared?
must you have guest-stared?
must he have guest-stared?
must we have guest-stared?
must you have guest-stared?
must they have guest-stared? 	must I have been guest-staring?
must you have been guest-staring?
must he have been guest-staring?
must we have been guest-staring?
must you have been guest-staring?
must they have been guest-staring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I guest-star?
mustn't you guest-star?
mustn't he guest-star?
mustn't we guest-star?
mustn't you guest-star?
mustn't they guest-star? 	mustn't I be guest-staring?
mustn't you be guest-staring?
mustn't he be guest-staring?
mustn't we be guest-staring?
mustn't you be guest-staring?
mustn't they be guest-staring? 	mustn't I have guest-stared?
mustn't you have guest-stared?
mustn't he have guest-stared?
mustn't we have guest-stared?
mustn't you have guest-stared?
mustn't they have guest-stared? 	mustn't I have been guest-staring?
mustn't you have been guest-staring?
mustn't he have been guest-staring?
mustn't we have been guest-staring?
mustn't you have been guest-staring?
mustn't they have been guest-staring?