must itch
Verbo regular: itch - itched- itched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must itch
you must itch
he must itch
we must itch
you must itch
they must itch 	I must be itching
you must be itching
he must be itching
we must be itching
you must be itching
they must be itching	I must have itched
you must have itched
he must have itched
we must have itched
you must have itched
they must have itched	I must have been itching
you must have been itching
he must have been itching
we must have been itching
you must have been itching
they must have been itching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't itch
you mustn't itch
he mustn't itch
we mustn't itch
you mustn't itch
they mustn't itch 	I mustn't be itching
you mustn't be itching
he mustn't be itching
we mustn't be itching
you mustn't be itching
they mustn't be itching	I mustn't have itched
you mustn't have itched
he mustn't have itched
we mustn't have itched
you mustn't have itched
they mustn't have itched	I mustn't have been itching
you mustn't have been itching
he mustn't have been itching
we mustn't have been itching
you mustn't have been itching
they mustn't have been itching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I itch?
must you itch?
must he itch?
must we itch?
must you itch?
must they itch? 	must I be itching?
must you be itching?
must he be itching?
must we be itching?
must you be itching?
must they be itching? 	must I have itched?
must you have itched?
must he have itched?
must we have itched?
must you have itched?
must they have itched? 	must I have been itching?
must you have been itching?
must he have been itching?
must we have been itching?
must you have been itching?
must they have been itching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I itch?
mustn't you itch?
mustn't he itch?
mustn't we itch?
mustn't you itch?
mustn't they itch? 	mustn't I be itching?
mustn't you be itching?
mustn't he be itching?
mustn't we be itching?
mustn't you be itching?
mustn't they be itching? 	mustn't I have itched?
mustn't you have itched?
mustn't he have itched?
mustn't we have itched?
mustn't you have itched?
mustn't they have itched? 	mustn't I have been itching?
mustn't you have been itching?
mustn't he have been itching?
mustn't we have been itching?
mustn't you have been itching?
mustn't they have been itching?