English verb conjugation
MUST SHUT

Irregular verb: shut - shut - shut

Affirmation

Simple form	V-ing form
I must shut you must shut she must shut we must shut you must shut they must shut	I must be shutting you must be shutting she must be shutting we must be shutting you must be shutting they must be shutting
Perfect	V-ing perfect
I must have shut you must have shut she must have shut we must have shut you must have shut they must have shut	I must have been shutting you must have been shutting she must have been shutting we must have been shutting you must have been shutting they must have been shutting

Negation

Simple form	V-ing form
I mustn't shut you mustn't shut she mustn't shut we mustn't shut you mustn't shut they mustn't shut	I mustn't be shutting you mustn't be shutting she mustn't be shutting we mustn't be shutting you mustn't be shutting they mustn't be shutting
Perfect	V-ing perfect
I mustn't have shut you mustn't have shut she mustn't have shut we mustn't have shut you mustn't have shut they mustn't have shut	I mustn't have been shutting you mustn't have been shutting she mustn't have been shutting we mustn't have been shutting you mustn't have been shutting they mustn't have been shutting

Interrogative form

Simple form	V-ing form
must I shut? must you shut? must she shut? must we shut? must you shut? must they shut?	must I be shutting? must you be shutting? must she be shutting? must we be shutting? must you be shutting? must they be shutting?
Perfect	V-ing perfect
must I have shut? must you have shut? must she have shut? must we have shut? must you have shut? must they have shut?	must I have been shutting? must you have been shutting? must she have been shutting? must we have been shutting? must you have been shutting? must they have been shutting?

Interro-negative form

Simple form	V-ing form
mustn't I shut? mustn't you shut? mustn't she shut? mustn't we shut? mustn't you shut? mustn't they shut?	mustn't I be shutting? mustn't you be shutting? mustn't she be shutting? mustn't we be shutting? mustn't you be shutting? mustn't they be shutting?
Perfect	V-ing perfect
mustn't I have shut? mustn't you have shut? mustn't she have shut? mustn't we have shut? mustn't you have shut? mustn't they have shut?	mustn't I have been shutting? mustn't you have been shutting? mustn't she have been shutting? mustn't we have been shutting? mustn't you have been shutting? mustn't they have been shutting?