must calk
Verbo regular: calk - calked- calked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must calk
you must calk
he must calk
we must calk
you must calk
they must calk 	I must be calking
you must be calking
he must be calking
we must be calking
you must be calking
they must be calking	I must have calked
you must have calked
he must have calked
we must have calked
you must have calked
they must have calked	I must have been calking
you must have been calking
he must have been calking
we must have been calking
you must have been calking
they must have been calking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not calk
you must not calk
he must not calk
we must not calk
you must not calk
they must not calk 	I must not be calking
you must not be calking
he must not be calking
we must not be calking
you must not be calking
they must not be calking	I must not have calked
you must not have calked
he must not have calked
we must not have calked
you must not have calked
they must not have calked	I must not have been calking
you must not have been calking
he must not have been calking
we must not have been calking
you must not have been calking
they must not have been calking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I calk?
must you calk?
must he calk?
must we calk?
must you calk?
must they calk? 	must I be calking?
must you be calking?
must he be calking?
must we be calking?
must you be calking?
must they be calking? 	must I have calked?
must you have calked?
must he have calked?
must we have calked?
must you have calked?
must they have calked? 	must I have been calking?
must you have been calking?
must he have been calking?
must we have been calking?
must you have been calking?
must they have been calking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not calk?
must you not calk?
must he not calk?
must we not calk?
must you not calk?
must they not calk? 	must I not be calking?
must you not be calking?
must he not be calking?
must we not be calking?
must you not be calking?
must they not be calking? 	must I not have calked?
must you not have calked?
must he not have calked?
must we not have calked?
must you not have calked?
must they not have calked? 	must I not have been calking?
must you not have been calking?
must he not have been calking?
must we not have been calking?
must you not have been calking?
must they not have been calking?