must cork
Verbo regular: cork - corked- corked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cork
you must cork
he must cork
we must cork
you must cork
they must cork 	I must be corking
you must be corking
he must be corking
we must be corking
you must be corking
they must be corking	I must have corked
you must have corked
he must have corked
we must have corked
you must have corked
they must have corked	I must have been corking
you must have been corking
he must have been corking
we must have been corking
you must have been corking
they must have been corking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't cork
you mustn't cork
he mustn't cork
we mustn't cork
you mustn't cork
they mustn't cork 	I mustn't be corking
you mustn't be corking
he mustn't be corking
we mustn't be corking
you mustn't be corking
they mustn't be corking	I mustn't have corked
you mustn't have corked
he mustn't have corked
we mustn't have corked
you mustn't have corked
they mustn't have corked	I mustn't have been corking
you mustn't have been corking
he mustn't have been corking
we mustn't have been corking
you mustn't have been corking
they mustn't have been corking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cork?
must you cork?
must he cork?
must we cork?
must you cork?
must they cork? 	must I be corking?
must you be corking?
must he be corking?
must we be corking?
must you be corking?
must they be corking? 	must I have corked?
must you have corked?
must he have corked?
must we have corked?
must you have corked?
must they have corked? 	must I have been corking?
must you have been corking?
must he have been corking?
must we have been corking?
must you have been corking?
must they have been corking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I cork?
mustn't you cork?
mustn't he cork?
mustn't we cork?
mustn't you cork?
mustn't they cork? 	mustn't I be corking?
mustn't you be corking?
mustn't he be corking?
mustn't we be corking?
mustn't you be corking?
mustn't they be corking? 	mustn't I have corked?
mustn't you have corked?
mustn't he have corked?
mustn't we have corked?
mustn't you have corked?
mustn't they have corked? 	mustn't I have been corking?
mustn't you have been corking?
mustn't he have been corking?
mustn't we have been corking?
mustn't you have been corking?
mustn't they have been corking?