must photostat
Regular verb: photostat - photostatted- photostatted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must photostat
you must photostat
he must photostat
we must photostat
you must photostat
they must photostat 	I must be photostatting
you must be photostatting
he must be photostatting
we must be photostatting
you must be photostatting
they must be photostatting	I must have photostatted
you must have photostatted
he must have photostatted
we must have photostatted
you must have photostatted
they must have photostatted	I must have been photostatting
you must have been photostatting
he must have been photostatting
we must have been photostatting
you must have been photostatting
they must have been photostatting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't photostat
you mustn't photostat
he mustn't photostat
we mustn't photostat
you mustn't photostat
they mustn't photostat 	I mustn't be photostatting
you mustn't be photostatting
he mustn't be photostatting
we mustn't be photostatting
you mustn't be photostatting
they mustn't be photostatting	I mustn't have photostatted
you mustn't have photostatted
he mustn't have photostatted
we mustn't have photostatted
you mustn't have photostatted
they mustn't have photostatted	I mustn't have been photostatting
you mustn't have been photostatting
he mustn't have been photostatting
we mustn't have been photostatting
you mustn't have been photostatting
they mustn't have been photostatting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I photostat?
must you photostat?
must he photostat?
must we photostat?
must you photostat?
must they photostat? 	must I be photostatting?
must you be photostatting?
must he be photostatting?
must we be photostatting?
must you be photostatting?
must they be photostatting? 	must I have photostatted?
must you have photostatted?
must he have photostatted?
must we have photostatted?
must you have photostatted?
must they have photostatted? 	must I have been photostatting?
must you have been photostatting?
must he have been photostatting?
must we have been photostatting?
must you have been photostatting?
must they have been photostatting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I photostat?
mustn't you photostat?
mustn't he photostat?
mustn't we photostat?
mustn't you photostat?
mustn't they photostat? 	mustn't I be photostatting?
mustn't you be photostatting?
mustn't he be photostatting?
mustn't we be photostatting?
mustn't you be photostatting?
mustn't they be photostatting? 	mustn't I have photostatted?
mustn't you have photostatted?
mustn't he have photostatted?
mustn't we have photostatted?
mustn't you have photostatted?
mustn't they have photostatted? 	mustn't I have been photostatting?
mustn't you have been photostatting?
mustn't he have been photostatting?
mustn't we have been photostatting?
mustn't you have been photostatting?
mustn't they have been photostatting?