must bang
Verbo regular: bang - banged- banged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must bang
you must bang
she must bang
we must bang
you must bang
they must bang 	I must be banging
you must be banging
she must be banging
we must be banging
you must be banging
they must be banging	I must have banged
you must have banged
she must have banged
we must have banged
you must have banged
they must have banged	I must have been banging
you must have been banging
she must have been banging
we must have been banging
you must have been banging
they must have been banging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't bang
you mustn't bang
she mustn't bang
we mustn't bang
you mustn't bang
they mustn't bang 	I mustn't be banging
you mustn't be banging
she mustn't be banging
we mustn't be banging
you mustn't be banging
they mustn't be banging	I mustn't have banged
you mustn't have banged
she mustn't have banged
we mustn't have banged
you mustn't have banged
they mustn't have banged	I mustn't have been banging
you mustn't have been banging
she mustn't have been banging
we mustn't have been banging
you mustn't have been banging
they mustn't have been banging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I bang?
must you bang?
must she bang?
must we bang?
must you bang?
must they bang? 	must I be banging?
must you be banging?
must she be banging?
must we be banging?
must you be banging?
must they be banging? 	must I have banged?
must you have banged?
must she have banged?
must we have banged?
must you have banged?
must they have banged? 	must I have been banging?
must you have been banging?
must she have been banging?
must we have been banging?
must you have been banging?
must they have been banging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I bang?
mustn't you bang?
mustn't she bang?
mustn't we bang?
mustn't you bang?
mustn't they bang? 	mustn't I be banging?
mustn't you be banging?
mustn't she be banging?
mustn't we be banging?
mustn't you be banging?
mustn't they be banging? 	mustn't I have banged?
mustn't you have banged?
mustn't she have banged?
mustn't we have banged?
mustn't you have banged?
mustn't they have banged? 	mustn't I have been banging?
mustn't you have been banging?
mustn't she have been banging?
mustn't we have been banging?
mustn't you have been banging?
mustn't they have been banging?