English verb conjugation
MUST BANG

Regular verb: bang - banged - banged

Affirmation

Simple form	V-ing form
I must bang you must bang he must bang we must bang you must bang they must bang	I must be banging you must be banging he must be banging we must be banging you must be banging they must be banging
Perfect	V-ing perfect
I must have banged you must have banged he 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 he must have been banging we must have been banging you must have been banging they must have been banging

Negation

Simple form	V-ing form
I mustn't bang you mustn't bang he 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 he mustn't be banging we mustn't be banging you mustn't be banging they mustn't be banging
Perfect	V-ing perfect
I mustn't have banged you mustn't have banged he 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 he mustn't have been banging we mustn't have been banging you mustn't have been banging they mustn't have been banging

Interrogative form

Simple form	V-ing form
must I bang? must you bang? must he bang? must we bang? must you bang? must they bang?	must I be banging? must you be banging? must he be banging? must we be banging? must you be banging? must they be banging?
Perfect	V-ing perfect
must I have banged? must you have banged? must he 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 he have been banging? must we have been banging? must you have been banging? must they have been banging?

Interro-negative form

Simple form	V-ing form
mustn't I bang? mustn't you bang? mustn't he 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 he be banging? mustn't we be banging? mustn't you be banging? mustn't they be banging?
Perfect	V-ing perfect
mustn't I have banged? mustn't you have banged? mustn't he 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 he have been banging? mustn't we have been banging? mustn't you have been banging? mustn't they have been banging?