must bork
Verbo regular: bork - borked- borked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must bork
you must bork
he must bork
we must bork
you must bork
they must bork 	I must be borking
you must be borking
he must be borking
we must be borking
you must be borking
they must be borking	I must have borked
you must have borked
he must have borked
we must have borked
you must have borked
they must have borked	I must have been borking
you must have been borking
he must have been borking
we must have been borking
you must have been borking
they must have been borking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't bork
you mustn't bork
he mustn't bork
we mustn't bork
you mustn't bork
they mustn't bork 	I mustn't be borking
you mustn't be borking
he mustn't be borking
we mustn't be borking
you mustn't be borking
they mustn't be borking	I mustn't have borked
you mustn't have borked
he mustn't have borked
we mustn't have borked
you mustn't have borked
they mustn't have borked	I mustn't have been borking
you mustn't have been borking
he mustn't have been borking
we mustn't have been borking
you mustn't have been borking
they mustn't have been borking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I bork?
must you bork?
must he bork?
must we bork?
must you bork?
must they bork? 	must I be borking?
must you be borking?
must he be borking?
must we be borking?
must you be borking?
must they be borking? 	must I have borked?
must you have borked?
must he have borked?
must we have borked?
must you have borked?
must they have borked? 	must I have been borking?
must you have been borking?
must he have been borking?
must we have been borking?
must you have been borking?
must they have been borking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I bork?
mustn't you bork?
mustn't he bork?
mustn't we bork?
mustn't you bork?
mustn't they bork? 	mustn't I be borking?
mustn't you be borking?
mustn't he be borking?
mustn't we be borking?
mustn't you be borking?
mustn't they be borking? 	mustn't I have borked?
mustn't you have borked?
mustn't he have borked?
mustn't we have borked?
mustn't you have borked?
mustn't they have borked? 	mustn't I have been borking?
mustn't you have been borking?
mustn't he have been borking?
mustn't we have been borking?
mustn't you have been borking?
mustn't they have been borking?