must ta
Verbo regular: ta - taed- taed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must ta
you must ta
he must ta
we must ta
you must ta
they must ta 	I must be taing
you must be taing
he must be taing
we must be taing
you must be taing
they must be taing	I must have taed
you must have taed
he must have taed
we must have taed
you must have taed
they must have taed	I must have been taing
you must have been taing
he must have been taing
we must have been taing
you must have been taing
they must have been taing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't ta
you mustn't ta
he mustn't ta
we mustn't ta
you mustn't ta
they mustn't ta 	I mustn't be taing
you mustn't be taing
he mustn't be taing
we mustn't be taing
you mustn't be taing
they mustn't be taing	I mustn't have taed
you mustn't have taed
he mustn't have taed
we mustn't have taed
you mustn't have taed
they mustn't have taed	I mustn't have been taing
you mustn't have been taing
he mustn't have been taing
we mustn't have been taing
you mustn't have been taing
they mustn't have been taing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I ta?
must you ta?
must he ta?
must we ta?
must you ta?
must they ta? 	must I be taing?
must you be taing?
must he be taing?
must we be taing?
must you be taing?
must they be taing? 	must I have taed?
must you have taed?
must he have taed?
must we have taed?
must you have taed?
must they have taed? 	must I have been taing?
must you have been taing?
must he have been taing?
must we have been taing?
must you have been taing?
must they have been taing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I ta?
mustn't you ta?
mustn't he ta?
mustn't we ta?
mustn't you ta?
mustn't they ta? 	mustn't I be taing?
mustn't you be taing?
mustn't he be taing?
mustn't we be taing?
mustn't you be taing?
mustn't they be taing? 	mustn't I have taed?
mustn't you have taed?
mustn't he have taed?
mustn't we have taed?
mustn't you have taed?
mustn't they have taed? 	mustn't I have been taing?
mustn't you have been taing?
mustn't he have been taing?
mustn't we have been taing?
mustn't you have been taing?
mustn't they have been taing?