must add
Verbo regular: add - added- added

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must add
you must add
he must add
we must add
you must add
they must add 	I must be adding
you must be adding
he must be adding
we must be adding
you must be adding
they must be adding	I must have added
you must have added
he must have added
we must have added
you must have added
they must have added	I must have been adding
you must have been adding
he must have been adding
we must have been adding
you must have been adding
they must have been adding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't add
you mustn't add
he mustn't add
we mustn't add
you mustn't add
they mustn't add 	I mustn't be adding
you mustn't be adding
he mustn't be adding
we mustn't be adding
you mustn't be adding
they mustn't be adding	I mustn't have added
you mustn't have added
he mustn't have added
we mustn't have added
you mustn't have added
they mustn't have added	I mustn't have been adding
you mustn't have been adding
he mustn't have been adding
we mustn't have been adding
you mustn't have been adding
they mustn't have been adding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I add?
must you add?
must he add?
must we add?
must you add?
must they add? 	must I be adding?
must you be adding?
must he be adding?
must we be adding?
must you be adding?
must they be adding? 	must I have added?
must you have added?
must he have added?
must we have added?
must you have added?
must they have added? 	must I have been adding?
must you have been adding?
must he have been adding?
must we have been adding?
must you have been adding?
must they have been adding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I add?
mustn't you add?
mustn't he add?
mustn't we add?
mustn't you add?
mustn't they add? 	mustn't I be adding?
mustn't you be adding?
mustn't he be adding?
mustn't we be adding?
mustn't you be adding?
mustn't they be adding? 	mustn't I have added?
mustn't you have added?
mustn't he have added?
mustn't we have added?
mustn't you have added?
mustn't they have added? 	mustn't I have been adding?
mustn't you have been adding?
mustn't he have been adding?
mustn't we have been adding?
mustn't you have been adding?
mustn't they have been adding?