I must attune you must attune he must attune we must attune you must attune they must attune
V-ing form
I must be attuning you must be attuning he must be attuning we must be attuning you must be attuning they must be attuning
Perfect
I must have attuned you must have attuned he must have attuned we must have attuned you must have attuned they must have attuned
V-ing perfect
I must have been attuning you must have been attuning he must have been attuning we must have been attuning you must have been attuning they must have been attuning
Negation
Simple form
I mustn't attune you mustn't attune he mustn't attune we mustn't attune you mustn't attune they mustn't attune
V-ing form
I mustn't be attuning you mustn't be attuning he mustn't be attuning we mustn't be attuning you mustn't be attuning they mustn't be attuning
Perfect
I mustn't have attuned you mustn't have attuned he mustn't have attuned we mustn't have attuned you mustn't have attuned they mustn't have attuned
V-ing perfect
I mustn't have been attuning you mustn't have been attuning he mustn't have been attuning we mustn't have been attuning you mustn't have been attuning they mustn't have been attuning
Interrogative form
Simple form
must I attune? must you attune? must he attune? must we attune? must you attune? must they attune?
V-ing form
must I be attuning? must you be attuning? must he be attuning? must we be attuning? must you be attuning? must they be attuning?
Perfect
must I have attuned? must you have attuned? must he have attuned? must we have attuned? must you have attuned? must they have attuned?
V-ing perfect
must I have been attuning? must you have been attuning? must he have been attuning? must we have been attuning? must you have been attuning? must they have been attuning?
Interro-negative form
Simple form
mustn't I attune? mustn't you attune? mustn't he attune? mustn't we attune? mustn't you attune? mustn't they attune?
V-ing form
mustn't I be attuning? mustn't you be attuning? mustn't he be attuning? mustn't we be attuning? mustn't you be attuning? mustn't they be attuning?
Perfect
mustn't I have attuned? mustn't you have attuned? mustn't he have attuned? mustn't we have attuned? mustn't you have attuned? mustn't they have attuned?
V-ing perfect
mustn't I have been attuning? mustn't you have been attuning? mustn't he have been attuning? mustn't we have been attuning? mustn't you have been attuning? mustn't they have been attuning?