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 must not cork
you must not cork
he must not cork
we must not cork
you must not cork
they must not cork 	I must not be corking
you must not be corking
he must not be corking
we must not be corking
you must not be corking
they must not be corking	I must not have corked
you must not have corked
he must not have corked
we must not have corked
you must not have corked
they must not have corked	I must not have been corking
you must not have been corking
he must not have been corking
we must not have been corking
you must not have been corking
they must not 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 	
must I not cork?
must you not cork?
must he not cork?
must we not cork?
must you not cork?
must they not cork? 	must I not be corking?
must you not be corking?
must he not be corking?
must we not be corking?
must you not be corking?
must they not be corking? 	must I not have corked?
must you not have corked?
must he not have corked?
must we not have corked?
must you not have corked?
must they not have corked? 	must I not have been corking?
must you not have been corking?
must he not have been corking?
must we not have been corking?
must you not have been corking?
must they not have been corking?