I must hold you must hold she must hold we must hold you must hold they must hold
V-ing form
I must be holding you must be holding she must be holding we must be holding you must be holding they must be holding
Perfect
I must have held you must have held she must have held we must have held you must have held they must have held
V-ing perfect
I must have been holding you must have been holding she must have been holding we must have been holding you must have been holding they must have been holding
Negation
Simple form
I mustn't hold you mustn't hold she mustn't hold we mustn't hold you mustn't hold they mustn't hold
V-ing form
I mustn't be holding you mustn't be holding she mustn't be holding we mustn't be holding you mustn't be holding they mustn't be holding
Perfect
I mustn't have held you mustn't have held she mustn't have held we mustn't have held you mustn't have held they mustn't have held
V-ing perfect
I mustn't have been holding you mustn't have been holding she mustn't have been holding we mustn't have been holding you mustn't have been holding they mustn't have been holding
Interrogative form
Simple form
must I hold? must you hold? must she hold? must we hold? must you hold? must they hold?
V-ing form
must I be holding? must you be holding? must she be holding? must we be holding? must you be holding? must they be holding?
Perfect
must I have held? must you have held? must she have held? must we have held? must you have held? must they have held?
V-ing perfect
must I have been holding? must you have been holding? must she have been holding? must we have been holding? must you have been holding? must they have been holding?
Interro-negative form
Simple form
mustn't I hold? mustn't you hold? mustn't she hold? mustn't we hold? mustn't you hold? mustn't they hold?
V-ing form
mustn't I be holding? mustn't you be holding? mustn't she be holding? mustn't we be holding? mustn't you be holding? mustn't they be holding?
Perfect
mustn't I have held? mustn't you have held? mustn't she have held? mustn't we have held? mustn't you have held? mustn't they have held?
V-ing perfect
mustn't I have been holding? mustn't you have been holding? mustn't she have been holding? mustn't we have been holding? mustn't you have been holding? mustn't they have been holding?