must preship
Regular verb: preship - preshiped- preshiped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must preship
you must preship
he must preship
we must preship
you must preship
they must preship 	I must be preshiping
you must be preshiping
he must be preshiping
we must be preshiping
you must be preshiping
they must be preshiping	I must have preshiped
you must have preshiped
he must have preshiped
we must have preshiped
you must have preshiped
they must have preshiped	I must have been preshiping
you must have been preshiping
he must have been preshiping
we must have been preshiping
you must have been preshiping
they must have been preshiping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't preship
you mustn't preship
he mustn't preship
we mustn't preship
you mustn't preship
they mustn't preship 	I mustn't be preshiping
you mustn't be preshiping
he mustn't be preshiping
we mustn't be preshiping
you mustn't be preshiping
they mustn't be preshiping	I mustn't have preshiped
you mustn't have preshiped
he mustn't have preshiped
we mustn't have preshiped
you mustn't have preshiped
they mustn't have preshiped	I mustn't have been preshiping
you mustn't have been preshiping
he mustn't have been preshiping
we mustn't have been preshiping
you mustn't have been preshiping
they mustn't have been preshiping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I preship?
must you preship?
must he preship?
must we preship?
must you preship?
must they preship? 	must I be preshiping?
must you be preshiping?
must he be preshiping?
must we be preshiping?
must you be preshiping?
must they be preshiping? 	must I have preshiped?
must you have preshiped?
must he have preshiped?
must we have preshiped?
must you have preshiped?
must they have preshiped? 	must I have been preshiping?
must you have been preshiping?
must he have been preshiping?
must we have been preshiping?
must you have been preshiping?
must they have been preshiping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I preship?
mustn't you preship?
mustn't he preship?
mustn't we preship?
mustn't you preship?
mustn't they preship? 	mustn't I be preshiping?
mustn't you be preshiping?
mustn't he be preshiping?
mustn't we be preshiping?
mustn't you be preshiping?
mustn't they be preshiping? 	mustn't I have preshiped?
mustn't you have preshiped?
mustn't he have preshiped?
mustn't we have preshiped?
mustn't you have preshiped?
mustn't they have preshiped? 	mustn't I have been preshiping?
mustn't you have been preshiping?
mustn't he have been preshiping?
mustn't we have been preshiping?
mustn't you have been preshiping?
mustn't they have been preshiping?