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 must not guest-star
you must not guest-star
he must not guest-star
we must not guest-star
you must not guest-star
they must not guest-star 	I must not be guest-staring
you must not be guest-staring
he must not be guest-staring
we must not be guest-staring
you must not be guest-staring
they must not be guest-staring	I must not have guest-stared
you must not have guest-stared
he must not have guest-stared
we must not have guest-stared
you must not have guest-stared
they must not have guest-stared	I must not have been guest-staring
you must not have been guest-staring
he must not have been guest-staring
we must not have been guest-staring
you must not have been guest-staring
they must not 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 	
must I not guest-star?
must you not guest-star?
must he not guest-star?
must we not guest-star?
must you not guest-star?
must they not guest-star? 	must I not be guest-staring?
must you not be guest-staring?
must he not be guest-staring?
must we not be guest-staring?
must you not be guest-staring?
must they not be guest-staring? 	must I not have guest-stared?
must you not have guest-stared?
must he not have guest-stared?
must we not have guest-stared?
must you not have guest-stared?
must they not have guest-stared? 	must I not have been guest-staring?
must you not have been guest-staring?
must he not have been guest-staring?
must we not have been guest-staring?
must you not have been guest-staring?
must they not have been guest-staring?